How to force output error message in php

How to force php to output error information: 1. Modify the content in "php.ini" to "display_errors = On;"; 2. Output the error information to a text file through the "ini_set" function; 3. , add the code "error_reporting" to the index.

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PHP Forced Output Error Message

1. Modify php.ini

;Display error message display_errors = On;

Display php start error message display_startup_errors = On;

Logging error information log_errors = On

2. PHP file output

ini_set('display_errors',1);            //错误信息  
ini_set('display_startup_errors',1);    //php启动错误信息  
error_reporting(-1);                    //打印出所有的 错误信息  
ini_set('error_log', dirname(__FILE__) . '/error_log.txt'); //将出错信息输出到一个文本文件

The online server turns off PHP error prompt information when you need to debug online code , can be opened dynamically, just add the following code to index.php

ini_set('display_errors', true);
error_reporting(E_ALL ^ E_WARNING ^ E_NOTICE);

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