Home Backend Development PHP Tutorial php使用mysqlnd引发的一些问题处理

php使用mysqlnd引发的一些问题处理

Jun 20, 2016 pm 12:54 PM

现在CentOS 5.11使用的仍是比较老旧的mysql 5.0.59 服务器版本,PHP也是使用的最高的也是5.3.3(使用yum -y install php53安装)。从官方看5.3的最后一个版本为5.3.29已经于2014年8月份停止支持,出现的一些bug及安全性问题将会得不到修复,因此我们决定将PHP的版本升级到5.5。在安装的时候我们使用

./configure --prefix=/data/php.5.5.26 --with-bz2 --with-curl --enable-ftp --enable-sockets --disable-ipv6 --with-gd  --with-iconv-dir=/data/libiconv --enable-mbstring --enable-calendar --with-gettext --with-zlib --with-mcrypt --with-pdo-mysql=mysqlnd --with-mysqli=mysqlnd --with-mysql=mysqlnd --enable-dom --enable-xml --enable-fpm --with-fpm-user=www --with-fpm-group=www
Copy after login

可以看到我们使用了mysqlnd作为连接数据库的驱动。可以在测试的过程中出现了一些问题。


  • 将代码部署到测试服务器的时间出现No such file or directory,检查nginx日志出现PHP message: PHP Warning: mysql_connect(): No such file or directory。经过检查发现原来是mysqlnd连接不到数据库,修改php的配置文件mysql.default_socket = /var/lib/mysql/mysql.sock 注意我这边是yum安装的mysql server,重新启动php-fpm.如果你使用的是apache的话则启动apache的服务即可。



  • 使用mysql_connect('localhost','root','123')发现服务器又报错

    mysqlnd cannot connect to MySQL 4.1+ using the old insecure authentication. Please use an administration tool to reset your password with the command SET PASSWORD = PASSWORD(‘your_existing_password’). This will store a new, and more secure, hash value in mysql.user. If this user is used in other scripts executed by PHP 5.2 or earlier you might need to remove the old-passwords flag from your my.cnf file


    使用mysqlnd的时候,有个地方需要注意。就是服务端的密码格式不能使用旧的16位的存储格式,而要使用新的41位的存储格式


  • mysql> select user,length(password) from mysql.user;+----------+------------------+| user     | length(password) |+----------+------------------+| root     |               16 || test     |               16 |+----------+------------------+2 rows in set (0.00 sec)
    Copy after login

    第一、更改数据库的配置文件/etc/my.conf

    在[mysqld]下检查是否有

    [mysqld]
    old_passwords=1

    将其更改为

    old_passwords=0

    如果没有新增之,然后重新启动数据库服务


    第二、更改数据库的密码

    update mysql.user set password=password('123456') where user='root';update mysql.user set password=password('123456') where user='test';flush privileges;   mysql> select user,length(password) from mysql.user;+--------------+------------------+| user         | length(password) |+--------------+------------------+| root         |               41 | | test         |               41 | +--------------+------------------+  这个更改密码看你有使用几个用户了。
    Copy after login

    再次刷新网页,正常了了。



    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
    4 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
    1670
    14
    PHP Tutorial
    1274
    29
    C# Tutorial
    1256
    24
    Explain secure password hashing in PHP (e.g., password_hash, password_verify). Why not use MD5 or SHA1? Explain secure password hashing in PHP (e.g., password_hash, password_verify). Why not use MD5 or SHA1? Apr 17, 2025 am 12:06 AM

    In PHP, password_hash and password_verify functions should be used to implement secure password hashing, and MD5 or SHA1 should not be used. 1) password_hash generates a hash containing salt values ​​to enhance security. 2) Password_verify verify password and ensure security by comparing hash values. 3) MD5 and SHA1 are vulnerable and lack salt values, and are not suitable for modern password security.

    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 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.

    How does PHP type hinting work, including scalar types, return types, union types, and nullable types? How does PHP type hinting work, including scalar types, return types, union types, and nullable types? Apr 17, 2025 am 12:25 AM

    PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values ​​and handle functions that may return null values.

    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: 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.

    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.

    How do you prevent SQL Injection in PHP? (Prepared statements, PDO) How do you prevent SQL Injection in PHP? (Prepared statements, PDO) Apr 15, 2025 am 12:15 AM

    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.

    See all articles