详解PHP错误日志的获取方法_PHP
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

Alipay PHP...

Session hijacking can be achieved through the following steps: 1. Obtain the session ID, 2. Use the session ID, 3. Keep the session active. The methods to prevent session hijacking in PHP include: 1. Use the session_regenerate_id() function to regenerate the session ID, 2. Store session data through the database, 3. Ensure that all session data is transmitted through HTTPS.

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,

The application of SOLID principle in PHP development includes: 1. Single responsibility principle (SRP): Each class is responsible for only one function. 2. Open and close principle (OCP): Changes are achieved through extension rather than modification. 3. Lisch's Substitution Principle (LSP): Subclasses can replace base classes without affecting program accuracy. 4. Interface isolation principle (ISP): Use fine-grained interfaces to avoid dependencies and unused methods. 5. Dependency inversion principle (DIP): High and low-level modules rely on abstraction and are implemented through dependency injection.

How to debug CLI mode in PHPStorm? When developing with PHPStorm, sometimes we need to debug PHP in command line interface (CLI) mode...

How to automatically set the permissions of unixsocket after the system restarts. Every time the system restarts, we need to execute the following command to modify the permissions of unixsocket: sudo...

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.

Sending JSON data using PHP's cURL library In PHP development, it is often necessary to interact with external APIs. One of the common ways is to use cURL library to send POST�...
