What is the method to force output error message in php

The method for php to force output error information is: first open the php.ini configuration file; then modify the configuration [display_errors = On display_startup_errors = On], and save the configuration.

Method 1: Modify the php.ini configuration file

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;显示错误信息
display_errors = On
;显示php开始错误信息
display_startup_errors = On
;日志记录错误信息
log_errors = On

Method 2: Add the following code to the first line of the php file that needs to be debugged

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

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