diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..9d4b362
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,7 @@
+.DS_Store
+phpunit.phar
+/vendor
+composer.phar
+composer.lock
+*.project
+.idea/
\ No newline at end of file
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..229071a
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,20 @@
+The MIT License (MIT)
+
+Copyright (c) 2015 Jens Segers
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/README.md b/README.md
index b1e2c87..9a9339a 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,47 @@
-# laravel-admin-ext-scheduling
+Scheduling task manager for laravel-admin
+============================
 
+[![StyleCI](https://styleci.io/repos/99676857/shield?branch=master)](https://styleci.io/repos/99676857)
+[![Packagist](https://img.shields.io/packagist/l/laravel-admin-ext/scheduling.svg?maxAge=2592000)](https://packagist.org/packages/laravel-admin-ext/scheduling)
+[![Total Downloads](https://img.shields.io/packagist/dt/laravel-admin-ext/scheduling.svg?style=flat-square)](https://packagist.org/packages/laravel-admin-ext/scheduling)
+[![Pull request welcome](https://img.shields.io/badge/pr-welcome-green.svg?style=flat-square)]()
+
+A web interface for manage task scheduling in laravel.
+
+[Documentation](http://laravel-admin.org/docs/#/en/extension-scheduling) | [中文文档](http://laravel-admin.org/docs/#/zh/extension-scheduling)
+
+## Screenshot
+
+![wx20170810-101048](https://user-images.githubusercontent.com/1479100/29151552-8affc0b2-7db4-11e7-932a-a10d8a42ec50.png)
+
+## Installation
+
+```
+$ composer require laravel-admin-ext/scheduling
+
+
+$ php artisan admin:import scheduling
+```
+
+Open `http://your-host/admin/scheduling`.
+
+Try to add a scheduling task in `app/Console/Kernel.php` like this:
+
+```php
+class Kernel extends ConsoleKernel
+{
+    protected function schedule(Schedule $schedule)
+    {
+        $schedule->command('inspire')->everyTenMinutes();
+        
+        $schedule->command('route:list')->dailyAt('02:00');
+    }
+}
+
+```
+
+And you can find these tasks in scheduling panel.
+
+License
+------------
+Licensed under [The MIT License (MIT)](LICENSE).
diff --git a/composer.json b/composer.json
new file mode 100644
index 0000000..b77dbec
--- /dev/null
+++ b/composer.json
@@ -0,0 +1,36 @@
+{
+    "name": "aix/laravel-admin-ext-scheduling",
+    "description": "Task scheduling extension for laravel-admin",
+    "type": "library",
+    "keywords": ["laravel-admin", "task", "Scheduling"],
+    "homepage": "https://github.com/laravel-admin-extensions/scheduling",
+    "license": "MIT",
+    "authors": [
+        {
+            "name": "z-song",
+            "email": "zosong@126.com"
+        }
+    ],
+    "require": {
+        "php": ">=7.0.0",
+        "laravel/framework": "~5.5",
+        "aix/laravel-admin": "1.0.*"
+    },
+    "require-dev": {
+        "phpunit/phpunit": "~6.0",
+        "laravel/laravel": "~5.5"
+    },
+    "autoload": {
+        "psr-4": {
+            "Encore\\Admin\\Scheduling\\": "src/"
+        }
+    },
+    "extra": {
+        "laravel": {
+            "providers": [
+                "Encore\\Admin\\Scheduling\\SchedulingServiceProvider"
+            ]
+
+        }
+    }
+}
diff --git a/resources/views/index.blade.php b/resources/views/index.blade.php
new file mode 100644
index 0000000..f860f8d
--- /dev/null
+++ b/resources/views/index.blade.php
@@ -0,0 +1,73 @@
+<script data-exec-on-popstate>
+    $(function () {
+        $('.run-task').click(function (e) {
+            var id = $(this).data('id');
+            NProgress.start();
+            $.ajax({
+                method: 'POST',
+                url: '{{ route('scheduling-run') }}',
+                data: {id: id, _token: LA.token},
+                success: function (data) {
+                    if (typeof data === 'object') {
+                        $('.output-box').removeClass('hide');
+                        $('.output-box .output-body').html(data.data);
+                    }
+                    NProgress.done();
+                }
+            });
+        });
+    });
+</script>
+
+<style>
+    .output-body {
+        white-space: pre-wrap;
+        background: #000000;
+        color: #00fa4a;
+        padding: 10px;
+        border-radius: 0;
+    }
+
+</style>
+
+<div class="box">
+    <!-- /.box-header -->
+    <div class="box-body no-padding">
+        <table class="table table-striped table-hover">
+            <tbody>
+            <tr>
+                <th style="width: 10px">#</th>
+                <th>Task</th>
+                <th>Run at</th>
+                <th>Next run time</th>
+                <th>Description</th>
+                <th>Run</th>
+            </tr>
+            @foreach($events as $index => $event)
+            <tr>
+                <td>{{ $index+1 }}.</td>
+                <td><code>{{ $event['task']['name'] }}</code></td>
+                <td><span class="label label-success">{{ $event['expression'] }}</span>&nbsp;{{ $event['readable'] }}</td>
+                <td>{{ $event['nextRunDate'] }}</td>
+                <td>{{ $event['description'] }}</td>
+                <td><a class="btn btn-xs btn-primary run-task" data-id="{{ $index+1 }}">Run</a></td>
+            </tr>
+            @endforeach
+            </tbody>
+        </table>
+    </div>
+    <!-- /.box-body -->
+</div>
+
+<div class="box box-default output-box hide">
+    <div class="box-header with-border">
+        <i class="fa fa-terminal"></i>
+
+        <h3 class="box-title">Output</h3>
+    </div>
+    <!-- /.box-header -->
+    <div class="box-body">
+        <pre class="output-body"></pre>
+    </div>
+    <!-- /.box-body -->
+</div>
\ No newline at end of file
diff --git a/src/CronSchedule.php b/src/CronSchedule.php
new file mode 100644
index 0000000..4455755
--- /dev/null
+++ b/src/CronSchedule.php
@@ -0,0 +1,1400 @@
+<?php
+
+namespace Encore\Admin\Scheduling;
+
+/*
+ * Plugin:        StreamlineFoundation
+ *
+ * Class:        Schedule
+ *
+ * Description:    Provides scheduling mechanics including creating a schedule, testing if a specific moment is part of the schedule, moving back
+ *                and forth between scheduled moments in time and translating the created schedule back to a human readable form.
+ *
+ * Usage:        ::fromCronString() creates a new Schedule class and requires a string in the cron ('* * * * *', $language) format.
+ *
+ *                ->next(<datetime>) returns the first scheduled datetime after <datetime> in array format.
+ *                ->nextAsString(<datetime>) does the same with an ISO string as the result.
+ *                ->nextAsTime(<datetime>) does the same with a UNIX timestamp as the result.
+ *
+ *                ->previous(<datetime>) returns the first scheduled datetime before <datetime> in array format.
+ *                ->previousAsString(<datetime>) does the same with an ISO string as the result.
+ *                ->previousAsTime(<datetime>) does the same with a UNIX timestamp as the result.
+ *
+ *                ->asNaturalLanguage() returns the entire schedule in natural language form.
+ *
+ *                In the next and previous functions, <datetime> can be a UNIX timestamp, an ISO string or an array format such as returned by
+ *                next() and previous().
+ *
+ * Copyright:    2012 Joost Brugman (joost@brugmanholding.com, joost@joostbrugman.com)
+ *
+ *                This file is part of the Streamline plugin "StreamlineFoundation" and referenced in the next paragraphs inside this comment block as "this
+ *                plugin". It is based on the Streamline application framework.
+ *
+ *                This plugin is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as
+ *                published by the Free Software Foundation, either version 3 of the License, or any later version. This plugin is distributed in the
+ *                hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+ *                PARTICULAR PURPOSE.  See the GNU General Public License for more details. You should have received a copy of the GNU General Public
+ *                License along with Streamline.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+class CronSchedule
+{
+    // The actual minutes, hours, daysOfMonth, months, daysOfWeek and years selected by the provided cron specification.
+    private $_minutes = [];
+    private $_hours = [];
+    private $_daysOfMonth = [];
+    private $_months = [];
+    private $_daysOfWeek = [];
+    private $_years = [];
+
+    // The original cron specification in compiled form.
+    private $_cronMinutes = [];
+    private $_cronHours = [];
+    private $_cronDaysOfMonth = [];
+    private $_cronMonths = [];
+    private $_cronDaysOfWeek = [];
+    private $_cronYears = [];
+
+    // The language table
+    private $_lang = false;
+
+    /**
+     * Minimum and maximum years to cope with the Year 2038 problem in UNIX. We run PHP which most likely runs on a UNIX environment so we
+     * must assume vulnerability.
+     */
+    protected $RANGE_YEARS_MIN = 1970;    // Must match date range supported by date(). See also: http://en.wikipedia.org/wiki/Year_2038_problem
+    protected $RANGE_YEARS_MAX = 2037;    // Must match date range supported by date(). See also: http://en.wikipedia.org/wiki/Year_2038_problem
+
+    /**
+     * Function:    __construct.
+     *
+     * Description:    Performs only base initialization, including language initialization.
+     *
+     * Parameters:    $language            The languagecode of the chosen language.
+     */
+    public function __construct($language = 'en')
+    {
+        $this->initLang($language);
+    }
+
+    //
+    // Function:    fromCronString
+    //
+    // Description:    Creates a new Schedule object based on a Cron specification.
+    //
+    // Parameters:    $cronSpec            A string containing a cron specification.
+    //                $language            The language to use to create a natural language representation of the string
+    //
+    // Result:        A new Schedule object. An \Exception is thrown if the specification is invalid.
+    //
+
+    final public static function fromCronString($cronSpec = '* * * * * *', $language = 'en')
+    {
+
+        // Split input liberal. Single or multiple Spaces, Tabs and Newlines are all allowed as separators.
+        if (count($elements = preg_split('/\s+/', $cronSpec)) < 5) {
+            throw new Exception('Invalid specification.');
+        }
+        /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+        // Named ranges in cron entries
+        /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+        $arrMonths = ['JAN' => 1, 'FEB' => 2, 'MAR' => 3, 'APR' => 4, 'MAY' => 5, 'JUN' => 6, 'JUL' => 7, 'AUG' => 8, 'SEP' => 9, 'OCT' => 10, 'NOV' => 11, 'DEC' => 12];
+        $arrDaysOfWeek = ['SUN' => 0, 'MON' => 1, 'TUE' => 2, 'WED' => 3, 'THU' => 4, 'FRI' => 5, 'SAT' => 6];
+
+        // Translate the cron specification into arrays that hold specifications of the actual dates
+        $newCron = new self($language);
+        $newCron->_cronMinutes = $newCron->cronInterpret($elements[0], 0, 59, [], 'minutes');
+        $newCron->_cronHours = $newCron->cronInterpret($elements[1], 0, 23, [], 'hours');
+        $newCron->_cronDaysOfMonth = $newCron->cronInterpret($elements[2], 1, 31, [], 'daysOfMonth');
+        $newCron->_cronMonths = $newCron->cronInterpret($elements[3], 1, 12, $arrMonths, 'months');
+        $newCron->_cronDaysOfWeek = $newCron->cronInterpret($elements[4], 0, 6, $arrDaysOfWeek, 'daysOfWeek');
+
+        $newCron->_minutes = $newCron->cronCreateItems($newCron->_cronMinutes);
+        $newCron->_hours = $newCron->cronCreateItems($newCron->_cronHours);
+        $newCron->_daysOfMonth = $newCron->cronCreateItems($newCron->_cronDaysOfMonth);
+        $newCron->_months = $newCron->cronCreateItems($newCron->_cronMonths);
+        $newCron->_daysOfWeek = $newCron->cronCreateItems($newCron->_cronDaysOfWeek);
+
+        if (isset($elements[5])) {
+            $newCron->_cronYears = $newCron->cronInterpret($elements[5], $newCron->RANGE_YEARS_MIN, $newCron->RANGE_YEARS_MAX, [], 'years');
+            $newCron->_years = $newCron->cronCreateItems($newCron->_cronYears);
+        }
+
+        return $newCron;
+    }
+
+    /*
+     * Function:    cronInterpret
+     *
+     * Description:    Interprets a single field from a cron specification. Throws an \Exception if the specification is in some way invalid.
+     *
+     * Parameters:    $specification        The actual text from the spefication, such as 12-38/3
+     *                $rangeMin            The lowest value for specification.
+     *                $rangeMax            The highest value for specification
+     *                $namesItems            A key/value pair where value is a value between $rangeMin and $rangeMax and key is the name for that value.
+     *                $errorName            The name of the category to use in case of an error.
+     *
+     * Result:        An array with entries, each of which is an array with the following fields:
+     *                'number1'            The first number of the range or the number specified
+     *                'number2'            The second number of the range if a range is specified
+     *                'hasInterval'        TRUE if a range is specified. FALSE otherwise
+     *                'interval'            The interval if a range is specified.
+     */
+    final private function cronInterpret($specification, $rangeMin, $rangeMax, $namedItems, $errorName)
+    {
+        if ((!is_string($specification)) && (!(is_int($specification)))) {
+            throw new Exception('Invalid specification.');
+        }
+        // Multiple values, separated by comma
+        $specs = [];
+        $specs['rangeMin'] = $rangeMin;
+        $specs['rangeMax'] = $rangeMax;
+        $specs['elements'] = [];
+        $arrSegments = explode(',', $specification);
+        foreach ($arrSegments as $segment) {
+            $hasRange = (($posRange = strpos($segment, '-')) !== false);
+            $hasInterval = (($posIncrement = strpos($segment, '/')) !== false);
+
+            /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+            // Check: Increment without range is invalid
+
+            //if(!$hasRange && $hasInterval)                                                throw new \Exception("Invalid Range ($errorName).");
+
+            // Check: Increment must be final specification
+
+            if ($hasRange && $hasInterval) {
+                if ($posIncrement < $posRange) {
+                    throw new \Exception("Invalid order ($errorName).");
+                }
+            }
+            // GetSegments
+
+            $segmentNumber1 = $segment;
+            $segmentNumber2 = '';
+            $segmentIncrement = '';
+            $intIncrement = 1;
+            if ($hasInterval) {
+                $segmentNumber1 = substr($segment, 0, $posIncrement);
+                $segmentIncrement = substr($segment, $posIncrement + 1);
+            }
+
+            if ($hasRange) {
+                $segmentNumber2 = substr($segmentNumber1, $posRange + 1);
+                $segmentNumber1 = substr($segmentNumber1, 0, $posRange);
+            }
+
+            // Get and validate first value in range
+
+            if ($segmentNumber1 == '*') {
+                $intNumber1 = $rangeMin;
+                $intNumber2 = $rangeMax;
+                $hasRange = true;
+            } else {
+                if (array_key_exists(strtoupper($segmentNumber1), $namedItems)) {
+                    $segmentNumber1 = $namedItems[strtoupper($segmentNumber1)];
+                }
+                if (((string) ($intNumber1 = (int) $segmentNumber1)) != $segmentNumber1) {
+                    throw new \Exception("Invalid symbol ($errorName).");
+                }
+                if (($intNumber1 < $rangeMin) || ($intNumber1 > $rangeMax)) {
+                    throw new \Exception("Out of bounds ($errorName).");
+                }
+                // Get and validate second value in range
+
+                if ($hasRange) {
+                    if (array_key_exists(strtoupper($segmentNumber2), $namedItems)) {
+                        $segmentNumber2 = $namedItems[strtoupper($segmentNumber2)];
+                    }
+                    if (((string) ($intNumber2 = (int) $segmentNumber2)) != $segmentNumber2) {
+                        throw new \Exception("Invalid symbol ($errorName).");
+                    }
+                    if (($intNumber2 < $rangeMin) || ($intNumber2 > $rangeMax)) {
+                        throw new \Exception("Out of bounds ($errorName).");
+                    }
+                    if ($intNumber1 > $intNumber2) {
+                        throw new \Exception("Invalid range ($errorName).");
+                    }
+                }
+            }
+
+            // Get and validate increment
+
+            if ($hasInterval) {
+                if (($intIncrement = (int) $segmentIncrement) != $segmentIncrement) {
+                    throw new \Exception("Invalid symbol ($errorName).");
+                }
+                if ($intIncrement < 1) {
+                    throw new \Exception("Out of bounds ($errorName).");
+                }
+            }
+
+            // Apply range and increment
+
+            $elem = [];
+            $elem['number1'] = $intNumber1;
+            $elem['hasInterval'] = $hasRange;
+            if ($hasRange) {
+                $elem['number2'] = $intNumber2;
+                $elem['interval'] = $intIncrement;
+            }
+            $specs['elements'][] = $elem;
+        }
+
+        return $specs;
+    }
+
+    //
+    // Function:    cronCreateItems
+    //
+    // Description:    Uses the interpreted cron specification of a single item from a cron specification to create an array with keys that match the
+    //                selected items.
+    //
+    // Parameters:    $cronInterpreted    The interpreted specification
+    //
+    // Result:        An array where each key identifies a matching entry. E.g. the cron specification */10 for minutes will yield an array
+    //                [0] => 1
+    //                [10] => 1
+    //                [20] => 1
+    //                [30] => 1
+    //                [40] => 1
+    //                [50] => 1
+    //
+
+    final private function cronCreateItems($cronInterpreted)
+    {
+        $items = [];
+
+        foreach ($cronInterpreted['elements'] as $elem) {
+            if (!$elem['hasInterval']) {
+                $items[$elem['number1']] = true;
+            } else {
+                for ($number = $elem['number1']; $number <= $elem['number2']; $number += $elem['interval']) {
+                    $items[$number] = true;
+                }
+            }
+        }
+        ksort($items);
+
+        return $items;
+    }
+
+    //
+    // Function:    dtFromParameters
+    //
+    // Description:    Transforms a flexible parameter passing of a datetime specification into an internally used array.
+    //
+    // Parameters:    $time                If a string interpreted as a datetime string in the YYYY-MM-DD HH:II format and other parameters ignored.
+    //                                    If an array $minute, $hour, $day, $month and $year are passed as keys 0-4 and other parameters ignored.
+    //                                    If a string, interpreted as unix time.
+    //                                    If omitted or specified FALSE, defaults to the current time.
+    //
+    // Result:        An array with indices 0-4 holding the actual interpreted values for $minute, $hour, $day, $month and $year.
+    //
+
+    final private function dtFromParameters($time = false)
+    {
+        if ($time === false) {
+            $arrTime = getdate();
+
+            return [$arrTime['minutes'], $arrTime['hours'], $arrTime['mday'], $arrTime['mon'], $arrTime['year']];
+        } elseif (is_array($time)) {
+            return $time;
+        } elseif (is_string($time)) {
+            $arrTime = getdate(strtotime($time));
+
+            return [$arrTime['minutes'], $arrTime['hours'], $arrTime['mday'], $arrTime['mon'], $arrTime['year']];
+        } elseif (is_int($time)) {
+            $arrTime = getdate($time);
+
+            return [$arrTime['minutes'], $arrTime['hours'], $arrTime['mday'], $arrTime['mon'], $arrTime['year']];
+        }
+    }
+
+    final private function dtAsString($arrDt)
+    {
+        if ($arrDt === false) {
+            return false;
+        }
+
+        return $arrDt[4].'-'.(strlen($arrDt[3]) == 1 ? '0' : '').$arrDt[3].'-'.(strlen($arrDt[2]) == 1 ? '0' : '').$arrDt[2].' '.(strlen($arrDt[1]) == 1 ? '0' : '').$arrDt[1].':'.(strlen($arrDt[0]) == 1 ? '0' : '').$arrDt[0].':00';
+    }
+
+    //
+    // Function:    match
+    //
+    // Description:    Returns TRUE if the specified date and time corresponds to a scheduled point in time. FALSE otherwise.
+    //
+    // Parameters:    $time                If a string interpreted as a datetime string in the YYYY-MM-DD HH:II format and other parameters ignored.
+    //                                    If an array $minute, $hour, $day, $month and $year are passed as keys 0-4 and other parameters ignored.
+    //                                    If a string, interpreted as unix time.
+    //                                    If omitted or specified FALSE, defaults to the current time.
+    //
+    // Result:        TRUE if the schedule matches the specified datetime. FALSE otherwise.
+    //
+
+    final public function match($time = false)
+    {
+
+        // Convert parameters to array datetime
+
+        $arrDT = $this->dtFromParameters($time);
+
+        // Verify match
+
+        // Years
+        if (!array_key_exists($arrDT[4], $this->_years)) {
+            return false;
+        }
+        // Day of week
+        if (!array_key_exists(date('w', strtotime($arrDT[4].'-'.$arrDT[3].'-'.$arrDT[2])), $this->_daysOfWeek)) {
+            return false;
+        }
+        // Month
+        if (!array_key_exists($arrDT[3], $this->_months)) {
+            return false;
+        }
+        // Day of month
+        if (!array_key_exists($arrDT[2], $this->_daysOfMonth)) {
+            return false;
+        }
+        // Hours
+        if (!array_key_exists($arrDT[1], $this->_hours)) {
+            return false;
+        }
+        // Minutes
+        if (!array_key_exists($arrDT[0], $this->_minutes)) {
+            return false;
+        }
+
+        return true;
+    }
+
+    //
+    // Function:    next
+    //
+    // Description:    Acquires the first scheduled datetime beyond the provided one.
+    //
+    // Parameters:    $time                If a string interpreted as a datetime string in the YYYY-MM-DD HH:II format and other parameters ignored.
+    //                                    If an array $minute, $hour, $day, $month and $year are passed as keys 0-4 and other parameters ignored.
+    //                                    If a string, interpreted as unix time.
+    //                                    If omitted or specified FALSE, defaults to the current time.
+    //
+    // Result:        An array with the following keys:
+    //                0                    Next scheduled minute
+    //                1                    Next scheduled hour
+    //                2                    Next scheduled date
+    //                3                    Next scheduled month
+    //                4                    Next scheduled year
+    //
+
+    final public function next($time = false)
+    {
+
+        // Convert parameters to array datetime
+
+        $arrDT = $this->dtFromParameters($time);
+
+        while (1) {
+
+            // Verify the current date is in range. If not, move into range and consider this the next position
+
+            if (!array_key_exists($arrDT[4], $this->_years)) {
+                if (($arrDT[4] = $this->getEarliestItem($this->_years, $arrDT[4], false)) === false) {
+                    return false;
+                }
+                $arrDT[3] = $this->getEarliestItem($this->_months);
+                $arrDT[2] = $this->getEarliestItem($this->_daysOfMonth);
+                $arrDT[1] = $this->getEarliestItem($this->_hours);
+                $arrDT[0] = $this->getEarliestItem($this->_minutes);
+                break;
+            } elseif (!array_key_exists($arrDT[3], $this->_months)) {
+                $arrDT[3] = $this->getEarliestItem($this->_months, $arrDT[3]);
+                $arrDT[2] = $this->getEarliestItem($this->_daysOfMonth);
+                $arrDT[1] = $this->getEarliestItem($this->_hours);
+                $arrDT[0] = $this->getEarliestItem($this->_minutes);
+                break;
+            } elseif (!array_key_exists($arrDT[2], $this->_daysOfMonth)) {
+                $arrDT[2] = $this->getEarliestItem($this->_daysOfMonth, $arrDT[2]);
+                $arrDT[1] = $this->getEarliestItem($this->_hours);
+                $arrDT[0] = $this->getEarliestItem($this->_minutes);
+                break;
+            } elseif (!array_key_exists($arrDT[1], $this->_hours)) {
+                $arrDT[1] = $this->getEarliestItem($this->_hours, $arrDT[1]);
+                $arrDT[0] = $this->getEarliestItem($this->_minutes);
+                break;
+            } elseif (!array_key_exists($arrDT[1], $this->_hours)) {
+                $arrDT[0] = $this->getEarliestItem($this->_minutes, $arrDT[0]);
+                break;
+            }
+
+            // Advance minute, hour, date, month and year while overflowing.
+
+            $daysInThisMonth = date('t', strtotime($arrDT[4].'-'.$arrDT[3]));
+            if ($this->advanceItem($this->_minutes, 0, 59, $arrDT[0])) {
+                if ($this->advanceItem($this->_hours, 0, 23, $arrDT[1])) {
+                    if ($this->advanceItem($this->_daysOfMonth, 0, $daysInThisMonth, $arrDT[2])) {
+                        if ($this->advanceItem($this->_months, 1, 12, $arrDT[3])) {
+                            if ($this->advanceItem($this->_years, $this->RANGE_YEARS_MIN, $this->RANGE_YEARS_MAX, $arrDT[4])) {
+                                return false;
+                            }
+                        }
+                    }
+                }
+            }
+            break;
+        }
+
+        // If Datetime now points to a day that is schedule then return.
+
+        $dayOfWeek = date('w', strtotime($this->dtAsString($arrDT)));
+        if (array_key_exists($dayOfWeek, $this->_daysOfWeek)) {
+            return $arrDT;
+        }
+
+        // Otherwise move to next scheduled date
+
+        return $this->next($arrDT);
+    }
+
+    final public function nextAsString($time = false)
+    {
+        return $this->dtAsString($this->next($time));
+    }
+
+    final public function nextAsTime($time = false)
+    {
+        return strtotime($this->dtAsString($this->next($time)));
+    }
+
+    //
+    // Function:    advanceItem
+    //
+    // Description:    Advances the current item to the next one (the next minute, the next hour, etc.).
+    //
+    // Parameters:    $arrItems            A reference to the collection in which to advance.
+    //                $rangeMin            The lowest possible value for $current.
+    //                $rangeMax            The highest possible value for $current
+    //                $current            The index that is being incremented.
+    //
+    // Result:        FALSE if current did not overflow (reset back to the earliest possible value). TRUE if it did.
+    //
+
+    final private function advanceItem($arrItems, $rangeMin, $rangeMax, &$current)
+    {
+
+        // Advance pointer
+
+        $current++;
+
+        // If still before start, move to earliest
+
+        if ($current < $rangeMin) {
+            $current = $this->getEarliestItem($arrItems);
+        }
+
+        // Parse items until found or overflow
+
+        for (; $current <= $rangeMax; $current++) {
+            if (array_key_exists($current, $arrItems)) {
+                return false;
+            }
+        } // We did not overflow
+
+        // Or overflow
+
+        $current = $this->getEarliestItem($arrItems);
+
+        return true;
+    }
+
+    //
+    // Function:    getEarliestItem
+    //
+    // Description:    Retrieves the earliest item in a collection, e.g. the earliest minute or the earliest month.
+    //
+    // Parameters:    $arrItems            A reference to the collection in which to search.
+    //                $afterItem            The highest index that is to be skipped.
+    //
+
+    final private function getEarliestItem($arrItems, $afterItem = false, $allowOverflow = true)
+    {
+
+        // If no filter is specified, return the earliest listed item.
+
+        if ($afterItem === false) {
+            reset($arrItems);
+
+            return key($arrItems);
+        }
+
+        // Or parse until we passed $afterItem
+
+        foreach ($arrItems as $key => $value) {
+            if ($key > $afterItem) {
+                return $key;
+            }
+        }
+
+        // If still nothing found, we may have exhausted our options.
+
+        if (!$allowOverflow) {
+            return false;
+        }
+        reset($arrItems);
+
+        return key($arrItems);
+    }
+
+    //
+    // Function:    previous
+    //
+    // Description:    Acquires the first scheduled datetime before the provided one.
+    //
+    // Parameters:    $time                If a string interpreted as a datetime string in the YYYY-MM-DD HH:II format and other parameters ignored.
+    //                                    If an array $minute, $hour, $day, $month and $year are passed as keys 0-4 and other parameters ignored.
+    //                                    If a string, interpreted as unix time.
+    //                                    If omitted or specified FALSE, defaults to the current time.
+    //
+    // Result:        An array with the following keys:
+    //                0                    Previous scheduled minute
+    //                1                    Previous scheduled hour
+    //                2                    Previous scheduled date
+    //                3                    Previous scheduled month
+    //                4                    Previous scheduled year
+    //
+
+    final public function previous($time = false)
+    {
+
+        // Convert parameters to array datetime
+
+        $arrDT = $this->dtFromParameters($time);
+
+        while (1) {
+
+            // Verify the current date is in range. If not, move into range and consider this the previous position
+
+            if (!array_key_exists($arrDT[4], $this->_years)) {
+                if (($arrDT[4] = $this->getLatestItem($this->_years, $arrDT[4], false)) === false) {
+                    return false;
+                }
+                $arrDT[3] = $this->getLatestItem($this->_months);
+                $arrDT[2] = $this->getLatestItem($this->_daysOfMonth);
+                $arrDT[1] = $this->getLatestItem($this->_hours);
+                $arrDT[0] = $this->getLatestItem($this->_minutes);
+                break;
+            } elseif (!array_key_exists($arrDT[3], $this->_months)) {
+                $arrDT[3] = $this->getLatestItem($this->_months, $arrDT[3]);
+                $arrDT[2] = $this->getLatestItem($this->_daysOfMonth);
+                $arrDT[1] = $this->getLatestItem($this->_hours);
+                $arrDT[0] = $this->getLatestItem($this->_minutes);
+                break;
+            } elseif (!array_key_exists($arrDT[2], $this->_daysOfMonth)) {
+                $arrDT[2] = $this->getLatestItem($this->_daysOfMonth, $arrDT[2]);
+                $arrDT[1] = $this->getLatestItem($this->_hours);
+                $arrDT[0] = $this->getLatestItem($this->_minutes);
+                break;
+            } elseif (!array_key_exists($arrDT[1], $this->_hours)) {
+                $arrDT[1] = $this->getLatestItem($this->_hours, $arrDT[1]);
+                $arrDT[0] = $this->getLatestItem($this->_minutes);
+                break;
+            } elseif (!array_key_exists($arrDT[1], $this->_hours)) {
+                $arrDT[0] = $this->getLatestItem($this->_minutes, $arrDT[0]);
+                break;
+            }
+
+            // Recede minute, hour, date, month and year while overflowing.
+
+            $daysInPreviousMonth = date('t', strtotime('-1 month', strtotime($arrDT[4].'-'.$arrDT[3])));
+            if ($this->recedeItem($this->_minutes, 0, 59, $arrDT[0])) {
+                if ($this->recedeItem($this->_hours, 0, 23, $arrDT[1])) {
+                    if ($this->recedeItem($this->_daysOfMonth, 0, $daysInPreviousMonth, $arrDT[2])) {
+                        if ($this->recedeItem($this->_months, 1, 12, $arrDT[3])) {
+                            if ($this->recedeItem($this->_years, $this->RANGE_YEARS_MIN, $this->RANGE_YEARS_MAX, $arrDT[4])) {
+                                return false;
+                            }
+                        }
+                    }
+                }
+            }
+            break;
+        }
+
+        // If Datetime now points to a day that is schedule then return.
+
+        $dayOfWeek = date('w', strtotime($this->dtAsString($arrDT)));
+        if (array_key_exists($dayOfWeek, $this->_daysOfWeek)) {
+            return $arrDT;
+        }
+
+        // Otherwise move to next scheduled date
+
+        return $this->previous($arrDT);
+    }
+
+    final public function previousAsString($time = false)
+    {
+        return $this->dtAsString($this->previous($time));
+    }
+
+    final public function previousAsTime($time = false)
+    {
+        return strtotime($this->dtAsString($this->previous($time)));
+    }
+
+    //
+    // Function:    recedeItem
+    //
+    // Description:    Recedes the current item to the previous one (the previous minute, the previous hour, etc.).
+    //
+    // Parameters:    $arrItems            A reference to the collection in which to recede.
+    //                $rangeMin            The lowest possible value for $current.
+    //                $rangeMax            The highest possible value for $current
+    //                $current            The index that is being decremented.
+    //
+    // Result:        FALSE if current did not overflow (reset back to the highest possible value). TRUE if it did.
+    //
+
+    final private function recedeItem($arrItems, $rangeMin, $rangeMax, &$current)
+    {
+
+        // Recede pointer
+
+        $current--;
+
+        // If still above highest, move to highest
+
+        if ($current > $rangeMax) {
+            $current = $this->getLatestItem($arrItems, $rangeMax + 1);
+        }
+
+        // Parse items until found or overflow
+
+        for (; $current >= $rangeMin; $current--) {
+            if (array_key_exists($current, $arrItems)) {
+                return false;
+            }
+        } // We did not overflow
+
+        // Or overflow
+
+        $current = $this->getLatestItem($arrItems, $rangeMax + 1);
+
+        return true;
+    }
+
+    //
+    // Function:    getLatestItem
+    //
+    // Description:    Retrieves the latest item in a collection, e.g. the latest minute or the latest month.
+    //
+    // Parameters:    $arrItems            A reference to the collection in which to search.
+    //                $beforeItem            The lowest index that is to be skipped.
+    //
+
+    final private function getLatestItem($arrItems, $beforeItem = false, $allowOverflow = true)
+    {
+
+        // If no filter is specified, return the latestlisted item.
+
+        if ($beforeItem === false) {
+            end($arrItems);
+
+            return key($arrItems);
+        }
+
+        // Or parse until we passed $beforeItem
+
+        end($arrItems);
+        do {
+            if (($key = key($arrItems)) < $beforeItem) {
+                return $key;
+            }
+        } while (prev($arrItems));
+
+        // If still nothing found, we may have exhausted our options.
+
+        if (!$allowOverflow) {
+            return false;
+        }
+        end($arrItems);
+
+        return key($arrItems);
+    }
+
+    //
+    // Function:
+    //
+    // Description:
+    //
+    // Parameters:
+    //
+    // Result:
+    //
+
+    final private function getClass($spec)
+    {
+        if (!$this->classIsSpecified($spec)) {
+            return '0';
+        }
+        if ($this->classIsSingleFixed($spec)) {
+            return '1';
+        }
+
+        return '2';
+    }
+
+    //
+    // Function:
+    //
+    // Description:    Returns TRUE if the Cron Specification is specified. FALSE otherwise. This is true if the specification has more than one entry
+    //                or is anything than the entire approved range ("*").
+    //
+    // Parameters:
+    //
+    // Result:
+    //
+
+    final private function classIsSpecified($spec)
+    {
+        if ($spec['elements'][0]['hasInterval'] == false) {
+            return true;
+        }
+        if ($spec['elements'][0]['number1'] != $spec['rangeMin']) {
+            return true;
+        }
+        if ($spec['elements'][0]['number2'] != $spec['rangeMax']) {
+            return true;
+        }
+        if ($spec['elements'][0]['interval'] != 1) {
+            return true;
+        }
+
+        return false;
+    }
+
+    //
+    // Function:
+    //
+    // Description:    Returns TRUE if the Cron Specification is specified as a single value. FALSE otherwise. This is true only if there is only
+    //                one entry and the entry is only a single number (e.g. "10")
+    //
+    // Parameters:
+    //
+    // Result:
+    //
+
+    final private function classIsSingleFixed($spec)
+    {
+        return (count($spec['elements']) == 1) && (!$spec['elements'][0]['hasInterval']);
+    }
+
+    final private function initLang($language = 'en')
+    {
+        switch ($language) {
+            case 'en':
+                $this->_lang['elemMin: at_the_hour'] = 'at the hour';
+                $this->_lang['elemMin: after_the_hour_every_X_minute'] = 'every minute';
+                $this->_lang['elemMin: after_the_hour_every_X_minute_plural'] = 'every @1 minutes';
+                $this->_lang['elemMin: every_consecutive_minute'] = 'every consecutive minute';
+                $this->_lang['elemMin: every_consecutive_minute_plural'] = 'every consecutive @1 minutes';
+                $this->_lang['elemMin: every_minute'] = 'every minute';
+                $this->_lang['elemMin: between_X_and_Y'] = 'from the @1 to the @2';
+                $this->_lang['elemMin: at_X:Y'] = 'At @1:@2';
+                $this->_lang['elemHour: past_X:00'] = 'past @1:00';
+                $this->_lang['elemHour: between_X:00_and_Y:59'] = 'between @1:00 and @2:59';
+                $this->_lang['elemHour: in_the_60_minutes_past_'] = 'in the 60 minutes past every consecutive hour';
+                $this->_lang['elemHour: in_the_60_minutes_past__plural'] = 'in the 60 minutes past every consecutive @1 hours';
+                $this->_lang['elemHour: past_every_consecutive_'] = 'past every consecutive hour';
+                $this->_lang['elemHour: past_every_consecutive__plural'] = 'past every consecutive @1 hours';
+                $this->_lang['elemHour: past_every_hour'] = 'past every hour';
+                $this->_lang['elemDOM: the_X'] = 'the @1';
+                $this->_lang['elemDOM: every_consecutive_day'] = 'every consecutive day';
+                $this->_lang['elemDOM: every_consecutive_day_plural'] = 'every consecutive @1 days';
+                $this->_lang['elemDOM: on_every_day'] = 'on every day';
+                $this->_lang['elemDOM: between_the_Xth_and_Yth'] = 'between the @1 and the @2';
+                $this->_lang['elemDOM: on_the_X'] = 'on the @1';
+                $this->_lang['elemDOM: on_X'] = 'on @1';
+                $this->_lang['elemMonth: every_X'] = 'every @1';
+                $this->_lang['elemMonth: every_consecutive_month'] = 'every consecutive month';
+                $this->_lang['elemMonth: every_consecutive_month_plural'] = 'every consecutive @1 months';
+                $this->_lang['elemMonth: between_X_and_Y'] = 'from @1 to @2';
+                $this->_lang['elemMonth: of_every_month'] = 'of every month';
+                $this->_lang['elemMonth: during_every_X'] = 'during every @1';
+                $this->_lang['elemMonth: during_X'] = 'during @1';
+                $this->_lang['elemYear: in_X'] = 'in @1';
+                $this->_lang['elemYear: every_consecutive_year'] = 'every consecutive year';
+                $this->_lang['elemYear: every_consecutive_year_plural'] = 'every consecutive @1 years';
+                $this->_lang['elemYear: from_X_through_Y'] = 'from @1 through @2';
+                $this->_lang['elemDOW: on_every_day'] = 'on every day';
+                $this->_lang['elemDOW: on_X'] = 'on @1';
+                $this->_lang['elemDOW: but_only_on_X'] = 'but only if the event takes place on @1';
+                $this->_lang['separator_and'] = 'and';
+                $this->_lang['separator_or'] = 'or';
+                $this->_lang['day: 0_plural'] = 'Sundays';
+                $this->_lang['day: 1_plural'] = 'Mondays';
+                $this->_lang['day: 2_plural'] = 'Tuesdays';
+                $this->_lang['day: 3_plural'] = 'Wednesdays';
+                $this->_lang['day: 4_plural'] = 'Thursdays';
+                $this->_lang['day: 5_plural'] = 'Fridays';
+                $this->_lang['day: 6_plural'] = 'Saturdays';
+                $this->_lang['month: 1'] = 'January';
+                $this->_lang['month: 2'] = 'February';
+                $this->_lang['month: 3'] = 'March';
+                $this->_lang['month: 4'] = 'April';
+                $this->_lang['month: 5'] = 'May';
+                $this->_lang['month: 6'] = 'June';
+                $this->_lang['month: 7'] = 'July';
+                $this->_lang['month: 8'] = 'Augustus';
+                $this->_lang['month: 9'] = 'September';
+                $this->_lang['month: 10'] = 'October';
+                $this->_lang['month: 11'] = 'November';
+                $this->_lang['month: 12'] = 'December';
+                $this->_lang['ordinal: 1'] = '1st';
+                $this->_lang['ordinal: 2'] = '2nd';
+                $this->_lang['ordinal: 3'] = '3rd';
+                $this->_lang['ordinal: 4'] = '4th';
+                $this->_lang['ordinal: 5'] = '5th';
+                $this->_lang['ordinal: 6'] = '6th';
+                $this->_lang['ordinal: 7'] = '7th';
+                $this->_lang['ordinal: 8'] = '8th';
+                $this->_lang['ordinal: 9'] = '9th';
+                $this->_lang['ordinal: 10'] = '10th';
+                $this->_lang['ordinal: 11'] = '11th';
+                $this->_lang['ordinal: 12'] = '12th';
+                $this->_lang['ordinal: 13'] = '13th';
+                $this->_lang['ordinal: 14'] = '14th';
+                $this->_lang['ordinal: 15'] = '15th';
+                $this->_lang['ordinal: 16'] = '16th';
+                $this->_lang['ordinal: 17'] = '17th';
+                $this->_lang['ordinal: 18'] = '18th';
+                $this->_lang['ordinal: 19'] = '19th';
+                $this->_lang['ordinal: 20'] = '20th';
+                $this->_lang['ordinal: 21'] = '21st';
+                $this->_lang['ordinal: 22'] = '22nd';
+                $this->_lang['ordinal: 23'] = '23rd';
+                $this->_lang['ordinal: 24'] = '24th';
+                $this->_lang['ordinal: 25'] = '25th';
+                $this->_lang['ordinal: 26'] = '26th';
+                $this->_lang['ordinal: 27'] = '27th';
+                $this->_lang['ordinal: 28'] = '28th';
+                $this->_lang['ordinal: 29'] = '29th';
+                $this->_lang['ordinal: 30'] = '30th';
+                $this->_lang['ordinal: 31'] = '31st';
+                $this->_lang['ordinal: 32'] = '32nd';
+                $this->_lang['ordinal: 33'] = '33rd';
+                $this->_lang['ordinal: 34'] = '34th';
+                $this->_lang['ordinal: 35'] = '35th';
+                $this->_lang['ordinal: 36'] = '36th';
+                $this->_lang['ordinal: 37'] = '37th';
+                $this->_lang['ordinal: 38'] = '38th';
+                $this->_lang['ordinal: 39'] = '39th';
+                $this->_lang['ordinal: 40'] = '40th';
+                $this->_lang['ordinal: 41'] = '41st';
+                $this->_lang['ordinal: 42'] = '42nd';
+                $this->_lang['ordinal: 43'] = '43rd';
+                $this->_lang['ordinal: 44'] = '44th';
+                $this->_lang['ordinal: 45'] = '45th';
+                $this->_lang['ordinal: 46'] = '46th';
+                $this->_lang['ordinal: 47'] = '47th';
+                $this->_lang['ordinal: 48'] = '48th';
+                $this->_lang['ordinal: 49'] = '49th';
+                $this->_lang['ordinal: 50'] = '50th';
+                $this->_lang['ordinal: 51'] = '51st';
+                $this->_lang['ordinal: 52'] = '52nd';
+                $this->_lang['ordinal: 53'] = '53rd';
+                $this->_lang['ordinal: 54'] = '54th';
+                $this->_lang['ordinal: 55'] = '55th';
+                $this->_lang['ordinal: 56'] = '56th';
+                $this->_lang['ordinal: 57'] = '57th';
+                $this->_lang['ordinal: 58'] = '58th';
+                $this->_lang['ordinal: 59'] = '59th';
+                break;
+
+            case 'nl':
+                $this->_lang['elemMin: at_the_hour'] = 'op het hele uur';
+                $this->_lang['elemMin: after_the_hour_every_X_minute'] = 'elke minuut';
+                $this->_lang['elemMin: after_the_hour_every_X_minute_plural'] = 'elke @1 minuten';
+                $this->_lang['elemMin: every_consecutive_minute'] = 'elke opeenvolgende minuut';
+                $this->_lang['elemMin: every_consecutive_minute_plural'] = 'elke opeenvolgende @1 minuten';
+                $this->_lang['elemMin: every_minute'] = 'elke minuut';
+                $this->_lang['elemMin: between_X_and_Y'] = 'van de @1 tot en met de @2';
+                $this->_lang['elemMin: at_X:Y'] = 'Om @1:@2';
+                $this->_lang['elemHour: past_X:00'] = 'na @1:00';
+                $this->_lang['elemHour: between_X:00_and_Y:59'] = 'tussen @1:00 en @2:59';
+                $this->_lang['elemHour: in_the_60_minutes_past_'] = 'in de 60 minuten na elk opeenvolgend uur';
+                $this->_lang['elemHour: in_the_60_minutes_past__plural'] = 'in de 60 minuten na elke opeenvolgende @1 uren';
+                $this->_lang['elemHour: past_every_consecutive_'] = 'na elk opeenvolgend uur';
+                $this->_lang['elemHour: past_every_consecutive__plural'] = 'na elke opeenvolgende @1 uren';
+                $this->_lang['elemHour: past_every_hour'] = 'na elk uur';
+                $this->_lang['elemDOM: the_X'] = 'de @1';
+                $this->_lang['elemDOM: every_consecutive_day'] = 'elke opeenvolgende dag';
+                $this->_lang['elemDOM: every_consecutive_day_plural'] = 'elke opeenvolgende @1 dagen';
+                $this->_lang['elemDOM: on_every_day'] = 'op elke dag';
+                $this->_lang['elemDOM: between_the_Xth_and_Yth'] = 'tussen de @1 en de @2';
+                $this->_lang['elemDOM: on_the_X'] = 'op de @1';
+                $this->_lang['elemDOM: on_X'] = 'op @1';
+                $this->_lang['elemMonth: every_X'] = 'elke @1';
+                $this->_lang['elemMonth: every_consecutive_month'] = 'elke opeenvolgende maand';
+                $this->_lang['elemMonth: every_consecutive_month_plural'] = 'elke opeenvolgende @1 maanden';
+                $this->_lang['elemMonth: between_X_and_Y'] = 'van @1 tot @2';
+                $this->_lang['elemMonth: of_every_month'] = 'van elke maand';
+                $this->_lang['elemMonth: during_every_X'] = 'tijdens elke @1';
+                $this->_lang['elemMonth: during_X'] = 'tijdens @1';
+                $this->_lang['elemYear: in_X'] = 'in @1';
+                $this->_lang['elemYear: every_consecutive_year'] = 'elk opeenvolgend jaar';
+                $this->_lang['elemYear: every_consecutive_year_plural'] = 'elke opeenvolgende @1 jaren';
+                $this->_lang['elemYear: from_X_through_Y'] = 'van @1 tot en met @2';
+                $this->_lang['elemDOW: on_every_day'] = 'op elke dag';
+                $this->_lang['elemDOW: on_X'] = 'op @1';
+                $this->_lang['elemDOW: but_only_on_X'] = 'maar alleen als het plaatsvindt op @1';
+                $this->_lang['separator_and'] = 'en';
+                $this->_lang['separator_of'] = 'of';
+                $this->_lang['day: 0_plural'] = 'zondagen';
+                $this->_lang['day: 1_plural'] = 'maandagen';
+                $this->_lang['day: 2_plural'] = 'dinsdagen';
+                $this->_lang['day: 3_plural'] = 'woensdagen';
+                $this->_lang['day: 4_plural'] = 'donderdagen';
+                $this->_lang['day: 5_plural'] = 'vrijdagen';
+                $this->_lang['day: 6_plural'] = 'zaterdagen';
+                $this->_lang['month: 1'] = 'januari';
+                $this->_lang['month: 2'] = 'februari';
+                $this->_lang['month: 3'] = 'maart';
+                $this->_lang['month: 4'] = 'april';
+                $this->_lang['month: 5'] = 'mei';
+                $this->_lang['month: 6'] = 'juni';
+                $this->_lang['month: 7'] = 'juli';
+                $this->_lang['month: 8'] = 'augustus';
+                $this->_lang['month: 9'] = 'september';
+                $this->_lang['month: 10'] = 'october';
+                $this->_lang['month: 11'] = 'november';
+                $this->_lang['month: 12'] = 'december';
+                $this->_lang['ordinal: 1'] = '1e';
+                $this->_lang['ordinal: 2'] = '2e';
+                $this->_lang['ordinal: 3'] = '3e';
+                $this->_lang['ordinal: 4'] = '4e';
+                $this->_lang['ordinal: 5'] = '5e';
+                $this->_lang['ordinal: 6'] = '6e';
+                $this->_lang['ordinal: 7'] = '7e';
+                $this->_lang['ordinal: 8'] = '8e';
+                $this->_lang['ordinal: 9'] = '9e';
+                $this->_lang['ordinal: 10'] = '10e';
+                $this->_lang['ordinal: 11'] = '11e';
+                $this->_lang['ordinal: 12'] = '12e';
+                $this->_lang['ordinal: 13'] = '13e';
+                $this->_lang['ordinal: 14'] = '14e';
+                $this->_lang['ordinal: 15'] = '15e';
+                $this->_lang['ordinal: 16'] = '16e';
+                $this->_lang['ordinal: 17'] = '17e';
+                $this->_lang['ordinal: 18'] = '18e';
+                $this->_lang['ordinal: 19'] = '19e';
+                $this->_lang['ordinal: 20'] = '20e';
+                $this->_lang['ordinal: 21'] = '21e';
+                $this->_lang['ordinal: 22'] = '22e';
+                $this->_lang['ordinal: 23'] = '23e';
+                $this->_lang['ordinal: 24'] = '24e';
+                $this->_lang['ordinal: 25'] = '25e';
+                $this->_lang['ordinal: 26'] = '26e';
+                $this->_lang['ordinal: 27'] = '27e';
+                $this->_lang['ordinal: 28'] = '28e';
+                $this->_lang['ordinal: 29'] = '29e';
+                $this->_lang['ordinal: 30'] = '30e';
+                $this->_lang['ordinal: 31'] = '31e';
+                $this->_lang['ordinal: 32'] = '32e';
+                $this->_lang['ordinal: 33'] = '33e';
+                $this->_lang['ordinal: 34'] = '34e';
+                $this->_lang['ordinal: 35'] = '35e';
+                $this->_lang['ordinal: 36'] = '36e';
+                $this->_lang['ordinal: 37'] = '37e';
+                $this->_lang['ordinal: 38'] = '38e';
+                $this->_lang['ordinal: 39'] = '39e';
+                $this->_lang['ordinal: 40'] = '40e';
+                $this->_lang['ordinal: 41'] = '41e';
+                $this->_lang['ordinal: 42'] = '42e';
+                $this->_lang['ordinal: 43'] = '43e';
+                $this->_lang['ordinal: 44'] = '44e';
+                $this->_lang['ordinal: 45'] = '45e';
+                $this->_lang['ordinal: 46'] = '46e';
+                $this->_lang['ordinal: 47'] = '47e';
+                $this->_lang['ordinal: 48'] = '48e';
+                $this->_lang['ordinal: 49'] = '49e';
+                $this->_lang['ordinal: 50'] = '50e';
+                $this->_lang['ordinal: 51'] = '51e';
+                $this->_lang['ordinal: 52'] = '52e';
+                $this->_lang['ordinal: 53'] = '53e';
+                $this->_lang['ordinal: 54'] = '54e';
+                $this->_lang['ordinal: 55'] = '55e';
+                $this->_lang['ordinal: 56'] = '56e';
+                $this->_lang['ordinal: 57'] = '57e';
+                $this->_lang['ordinal: 58'] = '58e';
+                $this->_lang['ordinal: 59'] = '59e';
+                break;
+        }
+    }
+
+    final private function natlangPad2($number)
+    {
+        return (strlen($number) == 1 ? '0' : '').$number;
+    }
+
+    final private function natlangApply($id, $p1 = false, $p2 = false, $p3 = false, $p4 = false, $p5 = false, $p6 = false)
+    {
+        $txt = $this->_lang[$id];
+
+        if ($p1 !== false) {
+            $txt = str_replace('@1', $p1, $txt);
+        }
+        if ($p2 !== false) {
+            $txt = str_replace('@2', $p2, $txt);
+        }
+        if ($p3 !== false) {
+            $txt = str_replace('@3', $p3, $txt);
+        }
+        if ($p4 !== false) {
+            $txt = str_replace('@4', $p4, $txt);
+        }
+        if ($p5 !== false) {
+            $txt = str_replace('@5', $p5, $txt);
+        }
+        if ($p6 !== false) {
+            $txt = str_replace('@6', $p6, $txt);
+        }
+
+        return $txt;
+    }
+
+    //
+    // Function:    natlangRange
+    //
+    // Description:    Converts a range into natural language
+    //
+    // Parameters:
+    //
+    // Result:
+    //
+
+    final private function natlangRange($spec, $entryFunction, $p1 = false)
+    {
+        $arrIntervals = [];
+        foreach ($spec['elements'] as $elem) {
+            $arrIntervals[] = call_user_func($entryFunction, $elem, $p1);
+        }
+
+        $txt = '';
+        for ($index = 0; $index < count($arrIntervals); $index++) {
+            $txt .= ($index == 0 ? '' : ($index == (count($arrIntervals) - 1) ? ' '.$this->natlangApply('separator_and').' ' : ', ')).$arrIntervals[$index];
+        }
+
+        return $txt;
+    }
+
+    //
+    // Function:    natlangElementMinute
+    //
+    // Description:    Converts an entry from the minute specification to natural language.
+    //
+
+    final private function natlangElementMinute($elem)
+    {
+        if (!$elem['hasInterval']) {
+            if ($elem['number1'] == 0) {
+                return $this->natlangApply('elemMin: at_the_hour');
+            } else {
+                return $this->natlangApply('elemMin: after_the_hour_every_X_minute'.($elem['number1'] == 1 ? '' : '_plural'), $elem['number1']);
+            }
+        }
+
+        $txt = $this->natlangApply('elemMin: every_consecutive_minute'.($elem['interval'] == 1 ? '' : '_plural'), $elem['interval']);
+        if (($elem['number1'] != $this->_cronMinutes['rangeMin']) || ($elem['number2'] != $this->_cronMinutes['rangeMax'])) {
+            $txt .= ' ('.$this->natlangApply('elemMin: between_X_and_Y', $this->natlangApply('ordinal: '.$elem['number1']), $this->natlangApply('ordinal: '.$elem['number2'])).')';
+        }
+
+        return $txt;
+    }
+
+    //
+    // Function:    natlangElementHour
+    //
+    // Description:    Converts an entry from the hour specification to natural language.
+    //
+
+    final private function natlangElementHour($elem, $asBetween)
+    {
+        if (!$elem['hasInterval']) {
+            if ($asBetween) {
+                return $this->natlangApply('elemHour: between_X:00_and_Y:59', $this->natlangPad2($elem['number1']), $this->natlangPad2($elem['number1']));
+            } else {
+                return $this->natlangApply('elemHour: past_X:00', $this->natlangPad2($elem['number1']));
+            }
+        }
+
+        if ($asBetween) {
+            $txt = $this->natlangApply('elemHour: in_the_60_minutes_past_'.($elem['interval'] == 1 ? '' : '_plural'), $elem['interval']);
+        } else {
+            $txt = $this->natlangApply('elemHour: past_every_consecutive_'.($elem['interval'] == 1 ? '' : '_plural'), $elem['interval']);
+        }
+
+        if (($elem['number1'] != $this->_cronHours['rangeMin']) || ($elem['number2'] != $this->_cronHours['rangeMax'])) {
+            $txt .= ' ('.$this->natlangApply('elemHour: between_X:00_and_Y:59', $elem['number1'], $elem['number2']).')';
+        }
+
+        return $txt;
+    }
+
+    //
+    // Function:    natlangElementDayOfMonth
+    //
+    // Description:    Converts an entry from the day of month specification to natural language.
+    //
+
+    final private function natlangElementDayOfMonth($elem)
+    {
+        if (!$elem['hasInterval']) {
+            return $this->natlangApply('elemDOM: the_X', $this->natlangApply('ordinal: '.$elem['number1']));
+        }
+
+        $txt = $this->natlangApply('elemDOM: every_consecutive_day'.($elem['interval'] == 1 ? '' : '_plural'), $elem['interval']);
+        if (($elem['number1'] != $this->_cronHours['rangeMin']) || ($elem['number2'] != $this->_cronHours['rangeMax'])) {
+            $txt .= ' ('.$this->natlangApply('elemDOM: between_the_Xth_and_Yth', $this->natlangApply('ordinal: '.$elem['number1']), $this->natlangApply('ordinal: '.$elem['number2'])).')';
+        }
+
+        return $txt;
+    }
+
+    //
+    // Function:    natlangElementDayOfMonth
+    //
+    // Description:    Converts an entry from the month specification to natural language.
+    //
+
+    final private function natlangElementMonth($elem)
+    {
+        if (!$elem['hasInterval']) {
+            return $this->natlangApply('elemMonth: every_X', $this->natlangApply('month: '.$elem['number1']));
+        }
+
+        $txt = $this->natlangApply('elemMonth: every_consecutive_month'.($elem['interval'] == 1 ? '' : '_plural'), $elem['interval']);
+        if (($elem['number1'] != $this->_cronMonths['rangeMin']) || ($elem['number2'] != $this->_cronMonths['rangeMax'])) {
+            $txt .= ' ('.$this->natlangApply('elemMonth: between_X_and_Y', $this->natlangApply('month: '.$elem['number1']), $this->natlangApply('month: '.$elem['number2'])).')';
+        }
+
+        return $txt;
+    }
+
+    //
+    // Function:    natlangElementYear
+    //
+    // Description:    Converts an entry from the year specification to natural language.
+    //
+
+    final private function natlangElementYear($elem)
+    {
+        if (!$elem['hasInterval']) {
+            return $elem['number1'];
+        }
+
+        $txt = $this->natlangApply('elemYear: every_consecutive_year'.($elem['interval'] == 1 ? '' : '_plural'), $elem['interval']);
+        if (($elem['number1'] != $this->_cronMonths['rangeMin']) || ($elem['number2'] != $this->_cronMonths['rangeMax'])) {
+            $txt .= ' ('.$this->natlangApply('elemYear: from_X_through_Y', $elem['number1'], $elem['number2']).')';
+        }
+
+        return $txt;
+    }
+
+    //
+    // Function:    asNaturalLanguage
+    //
+    // Description:    Returns the current cron specification in natural language.
+    //
+    // Parameters:    None
+    //
+    // Result:        A string containing a natural language text.
+    //
+
+    final public function asNaturalLanguage()
+    {
+        $switchForceDateExplaination = false;
+        $switchDaysOfWeekAreExcluding = true;
+
+        // Generate Time String
+
+        $txtMinutes = [];
+        $txtMinutes[0] = $this->natlangApply('elemMin: every_minute');
+        $txtMinutes[1] = $this->natlangElementMinute($this->_cronMinutes['elements'][0]);
+        $txtMinutes[2] = $this->natlangRange($this->_cronMinutes, [$this, 'natlangElementMinute']);
+
+        $txtHours = [];
+        $txtHours[0] = $this->natlangApply('elemHour: past_every_hour');
+        $txtHours[1] = [];
+        $txtHours[1]['between'] = $this->natlangRange($this->_cronHours, [$this, 'natlangElementHour'], true);
+        $txtHours[1]['past'] = $this->natlangRange($this->_cronHours, [$this, 'natlangElementHour'], false);
+        $txtHours[2] = [];
+        $txtHours[2]['between'] = $this->natlangRange($this->_cronHours, [$this, 'natlangElementHour'], true);
+        $txtHours[2]['past'] = $this->natlangRange($this->_cronHours, [$this, 'natlangElementHour'], false);
+
+        $classMinutes = $this->getClass($this->_cronMinutes);
+        $classHours = $this->getClass($this->_cronHours);
+
+        switch ($classMinutes.$classHours) {
+
+            // Special case: Unspecified date + Unspecified month
+            //
+            // Rule: The language for unspecified fields is omitted if a more detailed field has already been explained.
+            //
+            // The minutes field always yields an explaination, at the very least in the form of 'every minute'. This rule states that if the
+            // hour is not specified, it can be omitted because 'every minute' is already sufficiently clear.
+            //
+
+            case '00':
+                $txtTime = $txtMinutes[0];
+                break;
+
+            // Special case: Fixed minutes and fixed hours
+            //
+            // The default writing would be something like 'every 20 minutes past 04:00', but the more common phrasing would be: At 04:20.
+            //
+            // We will switch ForceDateExplaination on, so that even a non-specified date yields an explaination (e.g. 'every day')
+            //
+
+            case '11':
+                $txtTime = $this->natlangApply('elemMin: at_X:Y', $this->natlangPad2($this->_cronHours['elements'][0]['number1']), $this->natlangPad2($this->_cronMinutes['elements'][0]['number1']));
+                $switchForceDateExplaination = true;
+                break;
+
+            // Special case: Between :00 and :59
+            //
+            // If hours are specified, but minutes are not, then the minutes string will yield something like 'every minute'. We must the
+            // differentiate the hour specification because the minutes specification does not relate to all minutes past the hour, but only to
+            // those minutes between :00 and :59
+            //
+            // We will switch ForceDateExplaination on, so that even a non-specified date yields an explaination (e.g. 'every day')
+            //
+
+            case '01':
+            case '02':
+                $txtTime = $txtMinutes[$classMinutes].' '.$txtHours[$classHours]['between'];
+                $switchForceDateExplaination = true;
+                break;
+
+            // Special case: Past the hour
+            //
+            // If minutes are specified and hours are specified, then the specification of minutes is always limited to a maximum of 60 minutes
+            // and always applies to the minutes 'past the hour'.
+            //
+            // We will switch ForceDateExplaination on, so that even a non-specified date yields an explaination (e.g. 'every day')
+            //
+
+            case '12':
+            case '22':
+            case '21':
+                $txtTime = $txtMinutes[$classMinutes].' '.$txtHours[$classHours]['past'];
+                $switchForceDateExplaination = true;
+                break;
+
+            default:
+                $txtTime = $txtMinutes[$classMinutes].' '.$txtHours[$classHours];
+                break;
+        }
+
+        // Generate Date String
+
+        $txtDaysOfMonth = [];
+        $txtDaysOfMonth[0] = '';
+        $txtDaysOfMonth[1] = $this->natlangApply('elemDOM: on_the_X', $this->natlangApply('ordinal: '.$this->_cronDaysOfMonth['elements'][0]['number1']));
+        $txtDaysOfMonth[2] = $this->natlangApply('elemDOM: on_X', $this->natlangRange($this->_cronDaysOfMonth, [$this, 'natlangElementDayOfMonth']));
+
+        $txtMonths = [];
+        $txtMonths[0] = $this->natlangApply('elemMonth: of_every_month');
+        $txtMonths[1] = $this->natlangApply('elemMonth: during_every_X', $this->natlangApply('month: '.$this->_cronMonths['elements'][0]['number1']));
+        $txtMonths[2] = $this->natlangApply('elemMonth: during_X', $this->natlangRange($this->_cronMonths, [$this, 'natlangElementMonth']));
+
+        $classDaysOfMonth = $this->getClass($this->_cronDaysOfMonth);
+        $classMonths = $this->getClass($this->_cronMonths);
+
+        if ($classDaysOfMonth == '0') {
+            $switchDaysOfWeekAreExcluding = false;
+        }
+
+        switch ($classDaysOfMonth.$classMonths) {
+
+            // Special case: Unspecified date + Unspecified month
+            //
+            // Rule: The language for unspecified fields is omitted if a more detailed field has already been explained.
+            //
+            // The time fields always yield an explaination, at the very least in the form of 'every minute'. This rule states that if the date
+            // is not specified, it can be omitted because 'every minute' is already sufficiently clear.
+            //
+            // There are some time specifications that do not contain an 'every' reference, but reference a specific time of day. In those cases
+            // the date explaination is enforced.
+            //
+
+            case '00':
+                $txtDate = '';
+                break;
+
+            default:
+                $txtDate = ' '.$txtDaysOfMonth[$classDaysOfMonth].' '.$txtMonths[$classMonths];
+                break;
+        }
+
+        // Generate Year String
+
+        if ($this->_cronYears) {
+            $txtYears = [];
+            $txtYears[0] = '';
+            $txtYears[1] = ' '.$this->natlangApply('elemYear: in_X', $this->_cronYears['elements'][0]['number1']);
+            $txtYears[2] = ' '.$this->natlangApply('elemYear: in_X', $this->natlangRange($this->_cronYears, [$this, 'natlangElementYear']));
+
+            $classYears = $this->getClass($this->_cronYears);
+            $txtYear = $txtYears[$classYears];
+        }
+
+        // Generate DaysOfWeek String
+
+        $collectDays = 0;
+        foreach ($this->_cronDaysOfWeek['elements'] as $elem) {
+            if ($elem['hasInterval']) {
+                for ($x = $elem['number1']; $x <= $elem['number2']; $x += $elem['interval']) {
+                    $collectDays |= pow(2, $x);
+                }
+            } else {
+                $collectDays |= pow(2, $elem['number1']);
+            }
+        }
+        if ($collectDays == 127) {    // * all days
+            if (!$switchDaysOfWeekAreExcluding) {
+                $txtDays = ' '.$this->natlangApply('elemDOM: on_every_day');
+            } else {
+                $txtDays = '';
+            }
+        } else {
+            $arrDays = [];
+            for ($x = 0; $x <= 6; $x++) {
+                if ($collectDays & pow(2, $x)) {
+                    $arrDays[] = $x;
+                }
+            }
+            $txtDays = '';
+            for ($index = 0; $index < count($arrDays); $index++) {
+                $txtDays .= ($index == 0 ? '' : ($index == (count($arrDays) - 1) ? ' '.$this->natlangApply($switchDaysOfWeekAreExcluding ? 'separator_or' : 'separator_and').' ' : ', ')).$this->natlangApply('day: '.$arrDays[$index].'_plural');
+            }
+            if ($switchDaysOfWeekAreExcluding) {
+                $txtDays = ' '.$this->natlangApply('elemDOW: but_only_on_X', $txtDays);
+            } else {
+                $txtDays = ' '.$this->natlangApply('elemDOW: on_X', $txtDays);
+            }
+        }
+
+        $txtResult = ucfirst($txtTime).$txtDate.$txtDays;
+
+        if (isset($txtYear)) {
+            if ($switchDaysOfWeekAreExcluding) {
+                $txtResult = ucfirst($txtTime).$txtDate.$txtYear.$txtDays;
+            } else {
+                $txtResult = ucfirst($txtTime).$txtDate.$txtDays.$txtYear;
+            }
+        }
+
+        return $txtResult.'.';
+    }
+}
diff --git a/src/Scheduling.php b/src/Scheduling.php
new file mode 100644
index 0000000..d0bae5f
--- /dev/null
+++ b/src/Scheduling.php
@@ -0,0 +1,162 @@
+<?php
+
+namespace Encore\Admin\Scheduling;
+
+use Encore\Admin\Admin;
+use Encore\Admin\Extension;
+use Illuminate\Console\Scheduling\CallbackEvent;
+use Illuminate\Support\Str;
+
+class Scheduling extends Extension
+{
+    /**
+     * @var string out put file for command.
+     */
+    protected $sendOutputTo;
+
+    /**
+     * Get all events in console kernel.
+     *
+     * @return array
+     */
+    protected function getKernelEvents()
+    {
+        app()->make('Illuminate\Contracts\Console\Kernel');
+
+        return app()->make('Illuminate\Console\Scheduling\Schedule')->events();
+    }
+
+    /**
+     * Get all formatted tasks.
+     *
+     * @throws \Exception
+     *
+     * @return array
+     */
+    public function getTasks()
+    {
+        $tasks = [];
+
+        foreach ($this->getKernelEvents() as $event) {
+            $tasks[] = [
+                'task'          => $this->formatTask($event),
+                'expression'    => $event->expression,
+                'nextRunDate'   => $event->nextRunDate()->format('Y-m-d H:i:s'),
+                'description'   => $event->description,
+                'readable'      => CronSchedule::fromCronString($event->expression)->asNaturalLanguage(),
+            ];
+        }
+
+        return $tasks;
+    }
+
+    /**
+     * Format a giving task.
+     *
+     * @param $event
+     *
+     * @return array
+     */
+    protected function formatTask($event)
+    {
+        if ($event instanceof CallbackEvent) {
+            return [
+                'type' => 'closure',
+                'name' => 'Closure',
+            ];
+        }
+
+        if (Str::contains($event->command, '\'artisan\'')) {
+            $exploded = explode(' ', $event->command);
+
+            return [
+                'type' => 'artisan',
+                'name' => 'artisan '.implode(' ', array_slice($exploded, 2)),
+            ];
+        }
+
+        return [
+            'type' => 'command',
+            'name' => $event->command,
+        ];
+    }
+
+    /**
+     * Run specific task.
+     *
+     * @param int $id
+     *
+     * @return string
+     */
+    public function runTask($id)
+    {
+        set_time_limit(0);
+
+        /** @var \Illuminate\Console\Scheduling\Event $event */
+        $event = $this->getKernelEvents()[$id - 1];
+
+        $event->sendOutputTo($this->getOutputTo());
+
+        $event->run(app());
+
+        return $this->readOutput();
+    }
+
+    /**
+     * @return string
+     */
+    protected function getOutputTo()
+    {
+        if (!$this->sendOutputTo) {
+            $this->sendOutputTo = storage_path('app/task-schedule.output');
+        }
+
+        return $this->sendOutputTo;
+    }
+
+    /**
+     * Read output info from output file.
+     *
+     * @return string
+     */
+    protected function readOutput()
+    {
+        return file_get_contents($this->getOutputTo());
+    }
+
+    /**
+     * Bootstrap this package.
+     *
+     * @return void
+     */
+    public static function boot()
+    {
+        static::registerRoutes();
+
+        Admin::extend('scheduling', __CLASS__);
+    }
+
+    /**
+     * Register routes for laravel-admin.
+     *
+     * @return void
+     */
+    protected static function registerRoutes()
+    {
+        parent::routes(function ($router) {
+            /* @var \Illuminate\Routing\Router $router */
+            $router->get('scheduling', 'Encore\Admin\Scheduling\SchedulingController@index')->name('scheduling-index');
+            $router->post('scheduling/run', 'Encore\Admin\Scheduling\SchedulingController@runEvent')->name('scheduling-run');
+        });
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public static function import()
+    {
+        parent::createMenu('Scheduling', 'scheduling', 'fa-clock-o');
+
+        parent::createPermission('Scheduling', 'ext.scheduling', 'scheduling*');
+    }
+}
diff --git a/src/SchedulingController.php b/src/SchedulingController.php
new file mode 100644
index 0000000..3bc672a
--- /dev/null
+++ b/src/SchedulingController.php
@@ -0,0 +1,54 @@
+<?php
+
+namespace Encore\Admin\Scheduling;
+
+use Encore\Admin\Facades\Admin;
+use Encore\Admin\Layout\Content;
+use Illuminate\Http\Request;
+
+class SchedulingController
+{
+    /**
+     * Index interface.
+     *
+     * @return Content
+     */
+    public function index()
+    {
+        return Admin::content(function (Content $content) {
+            $content->header('任务列表');
+
+            $scheduling = new Scheduling();
+
+            $content->body(view('laravel-admin-scheduling::index', [
+                'events' => $scheduling->getTasks(),
+            ]));
+        });
+    }
+
+    /**
+     * @param Request $request
+     *
+     * @return array
+     */
+    public function runEvent(Request $request)
+    {
+        $scheduling = new Scheduling();
+
+        try {
+            $output = $scheduling->runTask($request->get('id'));
+
+            return [
+                'status'    => true,
+                'message'   => 'success',
+                'data'      => $output,
+            ];
+        } catch (\Exception $e) {
+            return [
+                'status'    => false,
+                'message'   => 'failed',
+                'data'      => $e->getMessage(),
+            ];
+        }
+    }
+}
diff --git a/src/SchedulingServiceProvider.php b/src/SchedulingServiceProvider.php
new file mode 100644
index 0000000..425a8ac
--- /dev/null
+++ b/src/SchedulingServiceProvider.php
@@ -0,0 +1,18 @@
+<?php
+
+namespace Encore\Admin\Scheduling;
+
+use Illuminate\Support\ServiceProvider;
+
+class SchedulingServiceProvider extends ServiceProvider
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function boot()
+    {
+        $this->loadViewsFrom(__DIR__.'/../resources/views', 'laravel-admin-scheduling');
+
+        Scheduling::boot();
+    }
+}