PHP error handling function

When the program is running online, if you encounter a BUG and want to avoid outputting error messages on the front end and notify developers by email in a timely manner, theregister_shutdown_functionfunction can be dispatched It comes in handy.

Register a function that will be called after the script execution is completed or after exit().

You can callregister_shutdown_function()multiple times, and these registered callbacks will be called sequentially in the order in which they were registered. If you call exit() inside a registered method, all processing will be aborted and other registered abort callbacks will not be called again.

register_shutdown_functionFunction, when our script execution is completed or unexpected death causes PHP execution to be shut down, our function will be called and can be used in conjunction witherror_get_lastUse to get error information.

register_shutdown_function ( callable $callback [, mixed $parameter [, mixed $... ]] )

callable callback function

parameter can pass parameters to the abort function by passing in additional parameters.

DEMO1:

//关闭错误报告 error_reporting(0); //实现自己的错误信息展示 register_shutdown_function(‘myShutdown‘); $debug = true; function myShutdown() { global $debug; // 无论错误是否发生，这句都会执行 echo ‘ERROR‘ , ‘
‘; if (!$debug) { $error = error_get_last(); // todo 可以在这里做邮件发送提醒 或 错误日志收集 var_export($error); } }

DEMO2:

// 回到函数带参数：记录当前请求URL $current_page = htmlspecialchars($_SERVER[‘SCRIPT_NAME‘], ENT_QUOTES, ‘UTF-8‘); $current_page .= $_SERVER[‘QUERY_STRING‘] ? ‘?‘.htmlspecialchars($_SERVER[‘QUERY_STRING‘], ENT_QUOTES, ‘UTF-8‘) : ‘‘; register_shutdown_function(function ($current_page) { //todo send email or log }, $current_page); error_get_last() //错误信息查看：http://php.net/manual/zh/errorfunc.constants.php

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