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HomeBackend DevelopmentPHP Tutorialphp版本的cron定时任务执行器使用实例_php技巧

本文实例讲述了php版本的cron定时任务执行器使用方法,是非常实用的一个功能应用。具体方法如下:

由于服务器crontab只能精确到分钟,因此程序的起点也是分钟。

该功能一共包括三个部分:

一、配置文件:

配置文件是用来返回要执行的定时任务文件,注意一下*的使用就行了,有两个模式,就是

Y-m-d H:i        :年 月 日 时 分
N H:i            :星期(1 - 7|周一 - 周日) 时 分

配置文件croning.php如下:

/**
 * 任务管理器配置文件
 * 
 * Y-m-d H:i    :年 月 日 时 分
 * N H:i      :星期(1 - 7|周一 - 周日) 时 分
 * 
 * 2013-12-25 19:49 : 固定时间,只执行一次
 * *-12-25 20:00  : 每年的某月某日 某小时某分
 * 2013-12-25 *:49 : 某天的每个小时的49分都执行一次
 * *-*-* 20:00   : 每天晚上8点0分执行
 * *-*-* *:*    :每分钟都在执行
 * 2 20:01     :每周二的20:01时间都执行一次
 * 
 * * 号表示当前位置的任何时间。以此类推....
 * 
 * 格式:
 * array(
 *   key=>value,
 * );
 * 
 * 说明:
 * key是定义的执行时间,value是执行的文件,可以是数组或者字符串,当同一时间有多个任务执行时,为了避免key的覆盖请用一维数组模式。
 * 
 */
return array(
  '2013-12-25 19:49'=>'123.php',
  '2013-12-* 18:00'=>'456.php',
  '1 08:00'=>'6546.php',
  '*-12-25 19:49'=>array('444.php','456.php')
);

二、服务器cronjob主要执行的php文件:

该php文件主要处理与分析哪些文件是当时可以执行的。以及写入执行记录文件。

<&#63;php
/**
 * cron任务统一执行的文件,没有超时
 */
header('Content-Type:text/html; charset=utf-8');
set_time_limit(0);
define('APP_ROOT', dirname(__FILE__));
define('AHA_ROOT', dirname(APP_ROOT));
define('CORE_ROOT', AHA_ROOT . '/__core');
define('DATA_ROOT', AHA_ROOT . '/data');
define('MODEL_ROOT', APP_ROOT . '/model');
define('ONING_ROOT', APP_ROOT . '/oning'); //定时执行文件目录
require CORE_ROOT . '/Common.php';
require CORE_ROOT . '/AHA.php'; //载入框架核心文件
spl_autoload_register(array('Common', 'loadClassFile'));
AHA::initConfig(include APP_ROOT . '/_config/inc.php'); //载入配置文件
//不存在执行的配置文件时
if (!file_exists(APP_ROOT . '/_config/croning.php')) {
  exit('cron failed,please check the cron config!');
}

$__all = include APP_ROOT . '/_config/croning.php';
//数据不合法时
if (!$__all || !is_array($__all)) {
  exit('cron failed,please check the cron config!');
}

$__echo = true; //是否输出到屏幕

$__time_star = microtime(true);
$__now = time();

Common::fileLog(DATA_ROOT . '/log/cron_index.log', '执行cron开始******************************' . date('Y-m-d H:i:s', $__now) . '******************************', $__echo);

$__onFile = array();
if ($__all) {
  foreach ($__all as $__key => $__value) {
    if (strpos($__key, '-') === false) {//每周的处理
      preg_match('@^([\d\*]+) ([\d\*]+):([\d\*]+)$@U', $__key, $match);
    } else {//正常的处理
      preg_match('@^([\d\*]+)\-([\d\*]+)\-([\d\*]+) ([\d\*]+):([\d\*]+)$@U', $__key, $match);
    }
    if ($match) {
      array_shift($match);
      if (__getPreg($match, $__now)) {//是否是要执行的文件
        $__onFile = array_merge($__onFile, is_array($__value) &#63; $__value : array($__value));
      }
    }
  }
}
if ($__onFile) {
  $__onFile = array_unique($__onFile);
  foreach ($__onFile as $__value) {
    if (file_exists(ONING_ROOT . '/' . $__value)) {
      $__time_star2 = microtime(true);
      Common::fileLog(DATA_ROOT . '/log/cron_index.log', $__value . ' 执行开始----------' . date('Y-m-d H:i:s') . '-----------', $__echo);
      include ONING_ROOT . '/' . $__value;
      Common::fileLog(DATA_ROOT . '/log/cron_index.log', $__value . ' 执行结束(花费时间:' . ((microtime(true) - $__time_star2) * 1000) . 'ms)-------------', $__echo);
    }
  }
}
Common::fileLog(DATA_ROOT . '/log/cron_index.log', '执行cron结束(一共执行时间:' . ((microtime(true) - $__time_star) * 1000) . 'ms)*************' . date('Y-m-d H:i:s') . '*****************' . "\n\n", $__echo);

/**
 * 处理正则结果并返回该文件是否是当时要执行
 * @param array $match   正则结果,数组
 * @param integer $__now  当时时间戳
 * @return bool
 */
function __getPreg($match, $__now) {
  $back = false;
  list($__Y, $__m, $__d, $__N, $__H, $__i) = explode('-', date('Y-m-d-N-H-i', $__now));
  $argc = count($match);
  if ($argc === 3) {
    $argc = $match[0] === '*' &#63; $__N : $match[0];
    $argc.=' ';
    $argc.=$match[1] === '*' &#63; $__H : $match[1];
    $argc.=':';
    $argc.=$match[2] === '*' &#63; $__i : $match[2];
    $back = date('N H:i', $__now) === date($argc, $__now) &#63; true : false;
  } elseif ($argc === 5) {
    $argc = $match[0] === '*' &#63; $__Y : $match[0];
    $argc.='-';
    $argc.=$match[1] === '*' &#63; $__m : $match[1];
    $argc.='-';
    $argc.=$match[2] === '*' &#63; $__d : $match[2];
    $argc.=' ';
    $argc.=$match[3] === '*' &#63; $__H : $match[3];
    $argc.=':';
    $argc.=$match[4] === '*' &#63; $__i : $match[4];
    $back = date('Y-m-d H:i', $__now) === date($argc, $__now) &#63; true : false;
  }
  return $back;
}

三、众多要执行的定时文件:

这个是真正要执行的代码:包括采集,数据整理与分析等,文件路径写到配置文件的value中去。同一时间执行的文件,记得一维数组模式。

感兴趣的朋友可以调试运行一下本文实例程序,相信会有很大的收获。

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