详解PHP错误日志的获取方法,详解php日志获取
详解PHP错误日志的获取方法,详解php日志获取
在PHP中错误日志的获取方法有很多种,下面我给大家简单介绍下遇到此类问题如何解决,下面通过代码给大家展示下,希望能够帮助到大家。
<?php error_reporting (0); register_shutdown_function($err = 'my_error_handler') OR set_error_handler($err,E_ALL); // 同时注册两个函数. // 函数参数错误 $original = unserialize ( array(423142,2134234)); // 不可对0除 echo 1/0; // 不存在的数组索引 echo $_GET['aa']; // 不存在的常量 PHP_E; // 不存在的变量 echo $var; // 函数参数错误 strlen(array(2434)); // 函数参数错误 md5(array(1)); // 用户自定义错误 trigger_error('safdds',E_USER_NOTICE); // 不存在的函数 php中断 // tes(); // 不存在的方法 php中断 $ts = new afsd(); function my_error_handler($errno=0 ,$errstr=0 , $errfile=0 ,$errline=0){ if($errno && $errfile){ if(true){ $earr = array(); $earr['type'] = $errno; $earr['message'] = $errstr; $earr['file'] = $errfile; $earr['line'] = $errline; } }else{ $earr = error_get_last(); } echo '<pre class="brush:php;toolbar:false">'; print_r($earr); return array(); }
对于php错误, 我们一定要认识清楚, 类型分几种, 什么时候触发, 返回值是什么.
如果不区分警告, 错误, 建议,提示等细类型种类, 那我们可以理解php错误类型共有两种:
一种是强制中断程序错误. 如错误, 方法不存在等. 内存不足, 超时
一种是非中断式错误. 如警告, 提示这些
其中获取中断程序错误需要使用register_shutdown_function函数, 注册一个内存函数, 然后里面取得错误信息, 这种方法仅能获取到首次的错误行, 如多个不存在的函数时, 它只能获取到首次的那个错误. 这其实也有好处, 你修复一个, 它就会移至下一个.
非中断式错误, 如果用:register_shutdown_function, 那会变得异常难操作, 仅仅能获取首次的提示或者警告, 这时我们需要set_error_handler, 每一次触有error level constants, 都会调用错误函数一次, 也就可以在里面获取错误日志. 不过此函数会承接 error_get_last 函数, 所以你会发现error_get_last返回为空, 全部由参数传入了.
两个函数一起运用, 即可获取到程序的99%的错误, 这对于php程序来说, 算是雪中送打火机了.
试试运行上面的示例吧.
通过代码和文字相结合对PHP中错误日志的获取方法的整理,希望对大家在今后的工作中遇到此类问题有所帮助。

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c

JWT is an open standard based on JSON, used to securely transmit information between parties, mainly for identity authentication and information exchange. 1. JWT consists of three parts: Header, Payload and Signature. 2. The working principle of JWT includes three steps: generating JWT, verifying JWT and parsing Payload. 3. When using JWT for authentication in PHP, JWT can be generated and verified, and user role and permission information can be included in advanced usage. 4. Common errors include signature verification failure, token expiration, and payload oversized. Debugging skills include using debugging tools and logging. 5. Performance optimization and best practices include using appropriate signature algorithms, setting validity periods reasonably,

A string is a sequence of characters, including letters, numbers, and symbols. This tutorial will learn how to calculate the number of vowels in a given string in PHP using different methods. The vowels in English are a, e, i, o, u, and they can be uppercase or lowercase. What is a vowel? Vowels are alphabetic characters that represent a specific pronunciation. There are five vowels in English, including uppercase and lowercase: a, e, i, o, u Example 1 Input: String = "Tutorialspoint" Output: 6 explain The vowels in the string "Tutorialspoint" are u, o, i, a, o, i. There are 6 yuan in total

This tutorial demonstrates how to efficiently process XML documents using PHP. XML (eXtensible Markup Language) is a versatile text-based markup language designed for both human readability and machine parsing. It's commonly used for data storage an

Static binding (static::) implements late static binding (LSB) in PHP, allowing calling classes to be referenced in static contexts rather than defining classes. 1) The parsing process is performed at runtime, 2) Look up the call class in the inheritance relationship, 3) It may bring performance overhead.

What are the magic methods of PHP? PHP's magic methods include: 1.\_\_construct, used to initialize objects; 2.\_\_destruct, used to clean up resources; 3.\_\_call, handle non-existent method calls; 4.\_\_get, implement dynamic attribute access; 5.\_\_set, implement dynamic attribute settings. These methods are automatically called in certain situations, improving code flexibility and efficiency.

PHP and Python each have their own advantages, and choose according to project requirements. 1.PHP is suitable for web development, especially for rapid development and maintenance of websites. 2. Python is suitable for data science, machine learning and artificial intelligence, with concise syntax and suitable for beginners.
