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php计划任务之ignore_user_abort函数实现

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Jun 13, 2016 am 11:26 AM

ignorephpuserTaskfunctionaccomplishdisconnectDetectionuserplan

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
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。

这里有一篇文章大家可以参考一下

http://www.bkjia.com/phper/php/php-ignore_user_abort.htm

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