Detailed explanation of php custom error log examples
php Custom error log
In the project, the defined error log needs to be processed in a timely manner, so you need to modify the output method of the custom error log (writing logs, sending emails, sending text messages )
1. register_shutdown_function(array('phperror','shutdown_function')); //Define the function to be executed after the PHP program is executed
The function can be implemented when A function that is executed after the program execution is completed, and its function is to implement subsequent operations after the program execution is completed. There may be an execution timeout or forced shutdown when the program is running, but the default prompt in this case is very unfriendly. If you use the register_shutdown_function() function to catch exceptions, you can provide a more friendly error display method. At the same time, Follow-up operations of some functions can be implemented, such as temporary data cleaning after completion of execution, including temporary files, etc.
You can understand the calling conditions like this:
1. When the page is forced to stop by the user
2. When the program code runs out of time
3. When When the PHP code execution is completed, there are exceptions, errors, and warnings in the code execution
2. set_error_handler(array('phperror','error_handler')); //Set a user-defined error handling function
Set a user-defined error handler through the set_error_handler() function, and then trigger the error (through trigger_error()):
3. set_exception_handler(array('phperror' ,'appException')); //Customized exception handling
Define the data format of exception thrown.
class phperror{
//自定义错误输出方法
public static function error_handler($errno, $errstr, $errfile, $errline){
$errtype = self::parse_errortype($errno);
$ip = $_SERVER['REMOTE_ADDR'];//这里简单的获取客户端IP
//错误提示格式自定义
$msg = date('Y-m-d H:i:s')." [$ip] [$errno] [-] [$errtype] [application] {$errstr} in {$errfile}:{$errline}";
//自定义日志文件的路径
$logPath = 'logs/app.log';
//写操作，注意文件大小等控制
file_put_contents($logPath, $msg, FILE_APPEND);
}
//系统运行中的错误输出方法
public static function shutdown_function(){
$lasterror = error_get_last();//shutdown只能抓到最后的错误，trace无法获取
$errtype = self::parse_errortype($lasterror['type']);
$ip = $_SERVER['REMOTE_ADDR'];//这里简单的获取客户端IP
//错误提示格式自定义
$msg = date('Y-m-d H:i:s')." [$ip] [{$lasterror['type']}] [-] [$errtype] [application] {$lasterror['message']} in {$file}:{$lasterror['line']}";
//自定义日志文件的路径
$logPath = 'logs/app.log';
//写操作，注意文件大小等控制
file_put_contents($logPath, $msg,FILE_APPEND);
}
//自定义异常输出
public static function appException($exception) {
echo " exception: " , $exception->getMessage(), "/n";
}
private static function parse_errortype($type){
switch($type){
case E_ERROR: // 1
return 'Fatal Error';
case E_WARNING: // 2
return 'Warning';
case E_PARSE: // 4
return 'Parse error';
case E_NOTICE: // 8
return 'Notice';
case E_CORE_ERROR: // 16
return 'Core error';
case E_CORE_WARNING: // 32
return 'Core warning';
case E_COMPILE_ERROR: // 64
return 'Compile error';
case E_COMPILE_WARNING: // 128
return 'Compile warning';
case E_USER_ERROR: // 256
return 'User error';
case E_USER_WARNING: // 512
return 'User warning';
case E_USER_NOTICE: // 1024
return 'User notice';
case E_STRICT: // 2048 //
return 'Strict Notice';
case E_RECOVERABLE_ERROR: // 4096
return 'Recoverable Error';
case E_DEPRECATED: // 8192
return 'Deprecated';
case E_USER_DEPRECATED: // 16384
return 'User deprecated';
}
return $type;
}
} The above is the detailed explanation of PHP custom error log examples. For more related content, please pay attention to the PHP Chinese website (www.php.cn) !
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 Installation and Upgrade guide for Ubuntu and Debian
Dec 24, 2024 pm 04:42 PM
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
7 PHP Functions I Regret I Didn't Know Before
Nov 13, 2024 am 09:42 AM
If you are an experienced PHP developer, you might have the feeling that you’ve been there and done that already.You have developed a significant number of applications, debugged millions of lines of code, and tweaked a bunch of scripts to achieve op
How To Set Up Visual Studio Code (VS Code) for PHP Development
Dec 20, 2024 am 11:31 AM
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
Explain JSON Web Tokens (JWT) and their use case in PHP APIs.
Apr 05, 2025 am 12:04 AM
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,
PHP Program to Count Vowels in a String
Feb 07, 2025 pm 12:12 PM
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
How do you parse and process HTML/XML in PHP?
Feb 07, 2025 am 11:57 AM
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
Explain late static binding in PHP (static::).
Apr 03, 2025 am 12:04 AM
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 PHP magic methods (__construct, __destruct, __call, __get, __set, etc.) and provide use cases?
Apr 03, 2025 am 12:03 AM
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.
