定义和用法
set_error_handler() 函数设置用户自定义的错误处理函数
该函数用于创建运行时期间的用户自己的错误处理方法。
该函数会返回旧的错误处理程序,若失败,则返回 null。
语法 set_error_handler(error_function,error_types)
参数 描述 error_function 必需,规定发生错误时运行的函数。
error_types 可选。规定在哪个错误报告级别会显示用户定义的错误。默认是 "E_ALL"。
提示和注释
提示:如果使用了该函数,会完全绕过标准的 PHP 错误处理函数,如果必要,用户定义的错误处理程序必须终止 (die() ) 脚本。
注释:如果在脚本执行前发生错误,由于在那时自定义程序还没有注册,因此就不会用到这个自定义错误处理程序。
例子
<?php//error handler functionfunction customError($errno, $errstr, $errfile, $errline) { echo "<b>Custom error:</b> [$errno] $errstr<br />"; echo " Error on line $errline in $errfile<br />"; echo "Ending Script"; die(); }//set error handlerset_error_handler("customError");$test=2;//trigger errorif ($test>1) { trigger_error("A custom error has been triggered"); }?>
输出:
Custom error: [1024] A custom error has been triggeredError on line 19 in C:\webfolder\test.phpEnding Script

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