What does php500 error mean?

The operating environment of this tutorial: Windows 10 system, PHP version 8.1, DELL G3 computer.

PHP 500 error is also known as "Internal Server Error", which is an error code indicating that the website server cannot parse the request. When an error occurs within the server or the request cannot be processed normally, a 500 error page will be returned. When users visit a website and encounter a 500 error, they usually see a blank page or a prompt containing error information.

Check PHP code

If a PHP 500 error occurs, first check the PHP code to look for script syntax errors, runtime errors, etc. Find out the location and cause of the error by inspecting the PHP code and output. Before resolving an error, it's a good idea to set up PHP error reporting to show detailed information, which will help you find the error faster. This setting is in the php.ini file, set error_reporting to E_ALL, and set display_errors to On.

If it is in a local or test environment, this is usually how we handle it. Just set the output error message in the program entry:

error_reporting(E_ALL ^ E_NOTICE);
//禁止把错误输出到页面
ini_set('display_errors', 0);
//设置错误信息输出到文件
ini_set('log_errors', 1);
//指定错误日志文件名
$error_dir = '/logs/err/';
$error_file = $error_dir . date('Ymd').'.log';
//目录不存在就创建
if (!is_dir($error_dir)){
   mkdir($error_dir, 0777, true);
}
//文件不存在就创建之
if(!file_exists($error_file)){
   $fp = fopen($error_file, 'w+');
   if($fp){
       fclose($fp);
   }
}
//设置错误输出文件
ini_set("error_log", $error_file);
//程序正常执行逻辑......

2. The disk is full causing

500 errors caused by insufficient disk space and insufficient space to read and write data are extremely uncommon and difficult to detect in time. Usually when encountering the 500 error, the first thing that comes to mind is a program error. In fact, it may also be due to insufficient disk space. If you find any problems in the program, you can check whether it is due to insufficient disk space~

df -h checks the disk space usage.

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