Mysqlnd: replace your old php mysql client library by mysqlnd
As you may know, I’m using and loving MariaDB. A colleague recently introduced me the benefits of the php built-in MySQL/MariaDB library (shame on me, I never heard of it). Here are the informations you can find from it on the MySQL website:
The mysqlnd library is highly optimized for and tightly integrated into PHP. The MySQL Client Library cannot offer the same optimizations because it is a general-purpose client library.
The mysqlnd library is using PHP internal C infrastructure for seamless integration into PHP. In addition, it is using PHP memory management, PHP Streams (I/O abstraction) and PHP string handling routines. The use of PHP memory management by mysqlnd allows, for example, memory savings by using read-only variables (copy on write) and makes mysqlnd apply to PHP memory limits. Additional advantages include:
- Powerful plugin API to extend feature set
- Asynchronous, non-blocking queries
- 150+ performance statistics
- Ships together with the PHP 5.3, and later, source
- No need to install MySQL Client Library
- Powerful plugins.
Why did I really changed? Because I was facing to this warning problems after an upgrade of PHP library from DotDeb packages:
PHP Warning: mysql_connect(): Headers and client library minor version mismatch. Headers:50535 Library:50617
So I decided to switch to php5-mysqlnd as a replacement of php5-mysql on Wheezy. However, it is not as easy as it could be. You need to completely remove php5-mysql, loose dependencies and then reinstall everything. To be more clear:
apt-get remove php5-mysql apt-get install php5-mysqlnd apt-get install php-fpm php5-geoip...
Now everything is back to normal and I won’t be annoyed of it in the future. You can also see the differences on the official PHP website.