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How to catch fatal errors in php

王林

Release： 2023-03-03 22:30:01

Original

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How to catch fatal errors in php: You can use the register_shutdown_function() function to catch fatal errors. The register_shutdown_function() function indicates that PHP triggers a certain function behavior at the end of the program.

How to catch fatal errors in php

Use the register_shutdown_function() function to capture fatal errors. This function indicates that PHP triggers a certain function behavior at the end of the program.

(Recommended tutorial: php graphic tutorial)

Syntax:

void register_shutdown_function(callable $callback[, mixed $parameter [, mixed $... ]])

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Parameters:

callback: abort callback to be registered
parameter: can be passed Enter additional parameters to pass the parameters to the abort function

There are four situations when the program ends:

An error occurred during the execution of the php code
The php code was executed successfully
The php code ran timeout
The page was forced to stop by the user

(Recommended video tutorial: Introduction to Programming)

Example:

We customize a behavior:

<?php
/**
 * Created by PhpStorm.
 * User: Xavier
 * Date: 2018/6/3
 * Time: 12:16
 */
class RegisterShutDownFunction
{
    /**
     * @author Xavier
     * @desc php 程序运行结束时候需要运行的函数
     */
    public static function register()
    {
        if ($error = error_get_last()) {
            // $filename 必须是一个绝对路径
            if (!defined(&#39;REGISTER_SHUTDOWN_FUNCTION_LOG_FILENAME&#39;)) {
                $filename = dirname(__FILE__) . DIRECTORY_SEPARATOR . &#39;register_shutdown_function.log&#39;;
            } else {
                $filename = REGISTER_SHUTDOWN_FUNCTION_LOG_FILENAME;
            }
            $message = &#39;时间 : &#39; . date(&#39;Y-m-d H:i:s&#39;) . PHP_EOL;
            $message .= &#39;文件 : &#39; . $error[&#39;file&#39;] . PHP_EOL;
            $message .= &#39;行数 : &#39; . $error[&#39;line&#39;] . PHP_EOL;
            $message .= &#39;错误 : &#39; . $error[&#39;message&#39;] . PHP_EOL;
            $message .= &#39;类型 : &#39; . $error[&#39;type&#39;] . PHP_EOL . PHP_EOL;
            file_put_contents($filename, $message, FILE_APPEND);
        }
    }
}

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Application:

<?php
/**
 * Created by PhpStorm.
 * User: Xavier
 * Date: 2018/6/3
 * Time: 12:27
 */
 // 定义一个常量来记录程序停止后，出现错误的 LOG 日志文件
define(&#39;REGISTER_SHUTDOWN_FUNCTION_LOG_FILENAME&#39;, dirname(__FILE__) . DIRECTORY_SEPARATOR . &#39;11.log&#39;);
// 包含异常处理的类文件
include &#39;lib/RegisterShutDownFunction.php&#39;;
$registerShutDownFunction = new RegisterShutDownFunction();
// register_shutdown_function 函数必须在所有的程序执行之间注册
register_shutdown_function(array($registerShutDownFunction, &#39;register&#39;));

// 注册成功之后调用一个不存在的方法 aa();
aa();

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Error log:

时间 : 2018-06-03 04:56:02
文件 : /Users/x/www/php/exception/2.php
行数 : 17
错误 : Uncaught Error: Call to undefined function aa() in /Users/x/www/php/exception/2.php:17
Stack trace:
#0 {main}
  thrown
类型 : 1

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