zoukankan      html  css  js  c++  java
  • PHP Cron Expression Parser ( LARAVEL )

    Latest Stable Version Total Downloads Build Status

    The PHP cron expression parser can parse a CRON expression, determine if it is due to run, calculate the next run date of the expression, and calculate the previous run date of the expression. You can calculate dates far into the future or past by skipping n number of matching dates.

    The parser can handle increments of ranges (e.g. */12, 2-59/3), intervals (e.g. 0-9), lists (e.g. 1,2,3), W to find the nearest weekday for a given day of the month, L to find the last day of the month, L to find the last given weekday of a month, and hash (#) to find the nth weekday of a given month.

    More information about this fork can be found in the blog post here. tl;dr - v2.0.0 is a major breaking change, and @dragonmantank can better take care of the project in a separate fork.

    Installing

    Add the dependency to your project:

    composer require dragonmantank/cron-expression

    Usage

    <?php
    
    require_once '/vendor/autoload.php';
    
    // Works with predefined scheduling definitions
    $cron = CronCronExpression::factory('@daily');
    $cron->isDue();
    echo $cron->getNextRunDate()->format('Y-m-d H:i:s');
    echo $cron->getPreviousRunDate()->format('Y-m-d H:i:s');
    
    // Works with complex expressions
    $cron = CronCronExpression::factory('3-59/15 6-12 */15 1 2-5');
    echo $cron->getNextRunDate()->format('Y-m-d H:i:s');
    
    // Calculate a run date two iterations into the future
    $cron = CronCronExpression::factory('@daily');
    echo $cron->getNextRunDate(null, 2)->format('Y-m-d H:i:s');
    
    // Calculate a run date relative to a specific time
    $cron = CronCronExpression::factory('@monthly');
    echo $cron->getNextRunDate('2010-01-12 00:00:00')->format('Y-m-d H:i:s');

    CRON Expressions

    A CRON expression is a string representing the schedule for a particular command to execute. The parts of a CRON schedule are as follows:

    *    *    *    *    *
    -    -    -    -    -
    |    |    |    |    |
    |    |    |    |    |
    |    |    |    |    +----- day of week (0 - 7) (Sunday=0 or 7)
    |    |    |    +---------- month (1 - 12)
    |    |    +--------------- day of month (1 - 31)
    |    +-------------------- hour (0 - 23)
    +------------------------- min (0 - 59)
    

    Requirements

    • PHP 7.0+
    • PHPUnit is required to run the unit tests
    • Composer is required to run the unit tests
  • 相关阅读:
    经常让程序员恼火的一些事情你是否也遇到过一些?
    CRC文件解压缩问题
    你在淘宝买件东西背后的复杂技术 技术普及帖
    程序员需要戒骄戒躁
    IT路上的应该注意自我规划 学习规划与自我修炼
    腾讯,我最恨别人用枪顶着我的头(转)
    软件管理,软件生命周期,软件过程名词解释
    程序员需要掌握的最终技术是什么? “终极技术”:应对困境的方法和信念
    程序员如何缓解“电脑病”
    新浪微博XSS攻击事件
  • 原文地址:https://www.cnblogs.com/mouseleo/p/10248819.html
Copyright © 2011-2022 走看看