Usage reference of error_reporting() function in php

This article introduces the usage of the error handling function error_reporting() in PHP. Friends in need can refer to it.

In php, error_reporting() sets the error level of PHP and returns the current level.

Syntax: error_reporting(report_level)

If the parameter level is not specified, the current error level will be returned. The following are possible values ​​for level:

; Error reporting is bitwise. Or add the numbers together to get the desired error reporting level.

; E_ALL – all errors and warnings

; E_ERROR – fatal runtime error

; E_WARNING – runtime warning (non-fatal error)

; E_PARSE – compile-time parsing error

; E_NOTICE – runtime reminder (these are often caused by bugs in your code,

;It may also be caused by intentional behavior. (For example: automatically initialized to one based on uninitialized variables

;the fact that the empty string uses an uninitialized variable)

; E_CORE_ERROR – Fatal error that occurs during the initialization process when PHP starts up

; E_CORE_WARNING – a warning (non-fatal error) that occurs during the initialization process when PHP starts up

; E_COMPILE_ERROR – Fatal compile-time error

; E_COMPILE_WARNING – compile-time warning (non-fatal error)

; E_USER_ERROR – user generated error message

; E_USER_WARNING – user generated warning message

; E_USER_NOTICE – reminder message generated by the user

Any number of the above options can be "or" connected (using OR or |), so that all required error levels can be reported.

For example, the following code turns off user-defined errors and warnings, performs certain operations, and then returns to the original error level: Example 1,

<?php
//禁用错误报告
error_reporting(0);
                   
//报告运行时错误
error_reporting(E_ERROR | E_WARNING | E_PARSE);
                   
//报告所有错误
error_reporting(E_ALL);
?>

Example 2,

<?php
error_reporting(255);   // 列出所有提示
error_reporting(0);     // 不显示所有提示
error_reporting(7);     // 建议使用
?>