下面是错误提示:
Warning: mysqli_connect(): Headers and client library minor version mismatch. Headers:50625 Library:50541 in /srv/pma/test.php on line 8
Warning: mysqli_connect(): (HY000/2002): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2) in /srv/pma/test.php on line 8
我在php.ini中设置的mysql.default_socket=/var/mysql/mysql.sock,不知道为什么不到这个文件去找socket,使用命令行可以连接mysql,同时密码也设置了,请问这是怎么回事?
回复内容:
下面是错误提示:
Warning: mysqli_connect(): Headers and client library minor version mismatch. Headers:50625 Library:50541 in /srv/pma/test.php on line 8
Warning: mysqli_connect(): (HY000/2002): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2) in /srv/pma/test.php on line 8
我在php.ini中设置的mysql.default_socket=/var/mysql/mysql.sock,不知道为什么不到这个文件去找socket,使用命令行可以连接mysql,同时密码也设置了,请问这是怎么回事?
你php的数据库host应该使用的是localhost,这个时候会使用socket的方式来连接数据库。
报错提示中的socket文件路径和你php.ini中的不一致。
猜想1、可能是你修改了php.ini,但是没有重启php-fpm。
猜想2、可能你的机器上多个路径下存在php.ini,而php-fpm加载的不是你修改的php.ini.可以随便写个页面通过phpinfo来确认一下你的php.ini 具体路径。
另外请查看一下你的mysql配置文件my.cnf中mysqld段关于socket的指定的路径。
php.ini里关于MySQL Socket的几个配置项:
mysql.default_socket 对应 mysql 系列函数
mysqli.default_socket 对应 mysqli 系列函数
pdo_mysql.default_socket 对应 pdo_mysql 系列函数
不建议使用php.ini里的MySQL连接信息,建议直接在mysqli_connect里指明socket或者端口的位置:
<code>$mysqli = mysqli_connect( null, // $app['db_host'], $app['db_username'], $app['db_password'], $app['db_name'], null, // $app['db_port'] $app['db_socket'] ); </code>

PHP is a server-side scripting language used for dynamic web development and server-side applications. 1.PHP is an interpreted language that does not require compilation and is suitable for rapid development. 2. PHP code is embedded in HTML, making it easy to develop web pages. 3. PHP processes server-side logic, generates HTML output, and supports user interaction and data processing. 4. PHP can interact with the database, process form submission, and execute server-side tasks.

PHP has shaped the network over the past few decades and will continue to play an important role in web development. 1) PHP originated in 1994 and has become the first choice for developers due to its ease of use and seamless integration with MySQL. 2) Its core functions include generating dynamic content and integrating with the database, allowing the website to be updated in real time and displayed in personalized manner. 3) The wide application and ecosystem of PHP have driven its long-term impact, but it also faces version updates and security challenges. 4) Performance improvements in recent years, such as the release of PHP7, enable it to compete with modern languages. 5) In the future, PHP needs to deal with new challenges such as containerization and microservices, but its flexibility and active community make it adaptable.

The core benefits of PHP include ease of learning, strong web development support, rich libraries and frameworks, high performance and scalability, cross-platform compatibility, and cost-effectiveness. 1) Easy to learn and use, suitable for beginners; 2) Good integration with web servers and supports multiple databases; 3) Have powerful frameworks such as Laravel; 4) High performance can be achieved through optimization; 5) Support multiple operating systems; 6) Open source to reduce development costs.

PHP is not dead. 1) The PHP community actively solves performance and security issues, and PHP7.x improves performance. 2) PHP is suitable for modern web development and is widely used in large websites. 3) PHP is easy to learn and the server performs well, but the type system is not as strict as static languages. 4) PHP is still important in the fields of content management and e-commerce, and the ecosystem continues to evolve. 5) Optimize performance through OPcache and APC, and use OOP and design patterns to improve code quality.

PHP and Python have their own advantages and disadvantages, and the choice depends on the project requirements. 1) PHP is suitable for web development, easy to learn, rich community resources, but the syntax is not modern enough, and performance and security need to be paid attention to. 2) Python is suitable for data science and machine learning, with concise syntax and easy to learn, but there are bottlenecks in execution speed and memory management.

PHP is used to build dynamic websites, and its core functions include: 1. Generate dynamic content and generate web pages in real time by connecting with the database; 2. Process user interaction and form submissions, verify inputs and respond to operations; 3. Manage sessions and user authentication to provide a personalized experience; 4. Optimize performance and follow best practices to improve website efficiency and security.

PHP uses MySQLi and PDO extensions to interact in database operations and server-side logic processing, and processes server-side logic through functions such as session management. 1) Use MySQLi or PDO to connect to the database and execute SQL queries. 2) Handle HTTP requests and user status through session management and other functions. 3) Use transactions to ensure the atomicity of database operations. 4) Prevent SQL injection, use exception handling and closing connections for debugging. 5) Optimize performance through indexing and cache, write highly readable code and perform error handling.

Using preprocessing statements and PDO in PHP can effectively prevent SQL injection attacks. 1) Use PDO to connect to the database and set the error mode. 2) Create preprocessing statements through the prepare method and pass data using placeholders and execute methods. 3) Process query results and ensure the security and performance of the code.


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

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Atom editor mac version download
The most popular open source editor

MinGW - Minimalist GNU for Windows
This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.

EditPlus Chinese cracked version
Small size, syntax highlighting, does not support code prompt function

Dreamweaver Mac version
Visual web development tools

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