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php计划任务之ignore_user_abort函数实现方法

Jun 06, 2016 pm 08:14 PM
php function Scheduled Tasks

这篇文章主要介绍了php计划任务之ignore_user_abort函数实现方法,以实例形式分析了php计划任务的ignore_user_abort函数实现方法,并对ignore_user_abort函数的用

本文实例讲述了php计划任务之ignore_user_abort函数实现方法。分享给大家供大家参考。具体分析如下:

PHP 不会检测到用户是否已断开连接,直到尝试向客户机发送信息为止,简单地使用 echo 语句无法确保信息发送,参阅 flush() 函数,代码如下:

复制代码 代码如下:

 ignore_user_abort(true);
 set_time_limit(0);
 
 while(1) {
   $fp  = fopen('time_task.txt',"a+");
   $str = date("Y-m-d h:i:s")."nr";
   fwrite($fp,$str);
   fclose($fp);
   sleep(5);    //半小时执行一次
 }
?>


定义和用法

ignore_user_abort() 函数设置与客户机断开是否会终止脚本的执行,本函数返回 user-abort 设置的之前的值(一个布尔值).

语法:ignore_user_abort(setting)

参数 描述

setting 可选,如果设置为 true,则忽略与用户的断开,如果设置为 false,会导致脚本停止运行,如果未设置该参数,会返回当前的设置.

提示和注释

注释:PHP 不会检测到用户是否已断开连接,直到尝试向客户机发送信息为止,简单地使用 echo 语句无法确保信息发送,参阅 flush() 函数.

希望本文所述对大家的php程序设计有所帮助。

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