Home Backend Development PHP Tutorial Take you to understand the usage of error_reporting function in PHP

Take you to understand the usage of error_reporting function in PHP

Aug 08, 2017 pm 02:16 PM
error php

This article mainly introduces relevant information about the detailed usage of the error_reporting function in PHP. Friends who need it can refer to it

Detailed introduction to the usage of the error_reporting function in PHP

PHP uses the error_reporting function to handle errors. The most common one is error_reporting(E_ALL ^ ​​E_NOTICE). What does this mean? Below we analyze the error_reporting function in detail.

Definition Usage

error_reporting() Sets PHP’s error reporting level and returns the current level.

Syntax


error_reporting(report_level)
Copy after login

If the parameter report_level is not specified, the current error level will be returned. The following items are possible values ​​for report_level:

ValueConstantDescription
1E_ERRORFatal runtime error. Unrecoverable error. Stop executing the script.
2E_WARNINGNon-fatal runtime error. The execution of the script does not stop.
4E_PARSECompile time error.
8E_NOTICERuntime reminder.
16E_CORE_ERRORFatal error when starting PHP. This is like an E_ERROR
32E_CORE_WARNING in the PHP core, a non-fatal error when PHP starts. This is like an E_WARNING warning in PHP core
64E_COMPILE_ERRORfatal compile-time error. This is like an E_ERROR
128E_COMPILE_WARNING non-fatal compile-time error generated by the Zend Scripting Engine An E_WARNING warning
256E_USER_ERRORUser-defined fatal error
512E_USER_WARNINGUser-defined warning (non-fatal error)
1024E_USER_NOTICEUser-defined warning Defined reminders (often bugs, may also be intentional)
2048E_STRICTEncoding standardization warnings (suggestions on how to modify to move forward Compatible)
4096E_RECOVERABLE_ERRORNear-fatal runtime error, if not caught it will be treated as E_ERROR
8191E_ALLAll errors except E_STRICT
##PHP does not enable errors by default, so you need to configure php.ini file:


Change display_errors = Off to display_errors = On


Also configure the error level, because PHP displays all errors by default, and some We don’t need harmless prompts, so the settings are as follows:


Change error_reporting = E_ALL to error_reporting = E_ALL & ~E_NOTICE


Example of use in PHP code:


Tip: Any number of the above options can be connected with "OR" (using OR or |), so that all required levels of errors can be reported. For example, the following code turns off user-defined errors and warnings, performs certain operations, and then returns to the original error level:



<?php
 
//禁用错误报告
 
error_reporting(0);
 
//报告运行时错误
 
error_reporting(E_ERROR | E_WARNING | E_PARSE);
 
//报告所有错误
 
error_reporting(E_ALL);
 
?>
Copy after login
Learn about error_reporting How to use the function, let's look at the error_reporting(E_ALL ^ ​​E_NOTICE) code, which means to display all error messages except E_NOTICE.

The above is the detailed content of Take you to understand the usage of error_reporting function in PHP. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

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

Hot Article

Roblox: Bubble Gum Simulator Infinity - How To Get And Use Royal Keys
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Nordhold: Fusion System, Explained
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Mandragora: Whispers Of The Witch Tree - How To Unlock The Grappling Hook
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Hot Topics

Java Tutorial
1666
14
PHP Tutorial
1273
29
C# Tutorial
1253
24
PHP and Python: Comparing Two Popular Programming Languages PHP and Python: Comparing Two Popular Programming Languages Apr 14, 2025 am 12:13 AM

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.

PHP: A Key Language for Web Development PHP: A Key Language for Web Development Apr 13, 2025 am 12:08 AM

PHP is a scripting language widely used on the server side, especially suitable for web development. 1.PHP can embed HTML, process HTTP requests and responses, and supports a variety of databases. 2.PHP is used to generate dynamic web content, process form data, access databases, etc., with strong community support and open source resources. 3. PHP is an interpreted language, and the execution process includes lexical analysis, grammatical analysis, compilation and execution. 4.PHP can be combined with MySQL for advanced applications such as user registration systems. 5. When debugging PHP, you can use functions such as error_reporting() and var_dump(). 6. Optimize PHP code to use caching mechanisms, optimize database queries and use built-in functions. 7

PHP in Action: Real-World Examples and Applications PHP in Action: Real-World Examples and Applications Apr 14, 2025 am 12:19 AM

PHP is widely used in e-commerce, content management systems and API development. 1) E-commerce: used for shopping cart function and payment processing. 2) Content management system: used for dynamic content generation and user management. 3) API development: used for RESTful API development and API security. Through performance optimization and best practices, the efficiency and maintainability of PHP applications are improved.

PHP vs. Python: Understanding the Differences PHP vs. Python: Understanding the Differences Apr 11, 2025 am 12:15 AM

PHP and Python each have their own advantages, and the choice should be based on project requirements. 1.PHP is suitable for web development, with simple syntax and high execution efficiency. 2. Python is suitable for data science and machine learning, with concise syntax and rich libraries.

The Enduring Relevance of PHP: Is It Still Alive? The Enduring Relevance of PHP: Is It Still Alive? Apr 14, 2025 am 12:12 AM

PHP is still dynamic and still occupies an important position in the field of modern programming. 1) PHP's simplicity and powerful community support make it widely used in web development; 2) Its flexibility and stability make it outstanding in handling web forms, database operations and file processing; 3) PHP is constantly evolving and optimizing, suitable for beginners and experienced developers.

PHP and Python: Code Examples and Comparison PHP and Python: Code Examples and Comparison Apr 15, 2025 am 12:07 AM

PHP and Python have their own advantages and disadvantages, and the choice depends on project needs and personal preferences. 1.PHP is suitable for rapid development and maintenance of large-scale web applications. 2. Python dominates the field of data science and machine learning.

PHP vs. Other Languages: A Comparison PHP vs. Other Languages: A Comparison Apr 13, 2025 am 12:19 AM

PHP is suitable for web development, especially in rapid development and processing dynamic content, but is not good at data science and enterprise-level applications. Compared with Python, PHP has more advantages in web development, but is not as good as Python in the field of data science; compared with Java, PHP performs worse in enterprise-level applications, but is more flexible in web development; compared with JavaScript, PHP is more concise in back-end development, but is not as good as JavaScript in front-end development.

PHP and Python: Different Paradigms Explained PHP and Python: Different Paradigms Explained Apr 18, 2025 am 12:26 AM

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

See all articles