We have a new linux server CentOS 6.5 with Plesk. Default PHP is 5.3.3, I have  installed PHP5.4 & 5.5 on the server. I am a beginner on linux. Actually, I don't know how to install software on the linux. I just search on the internet to find a solution.I have to install PHP by using this guidePHP installed successfully but some functions do not work, such as mysqli.Default PHP 5.3.3 configure command is:--with-mysql=shared,/usr --with-mysqli=shared,/usr/lib64/mysql/mysql_configbut my installed PHP 5.4 configure command is:--with-mysql=/usr --with-mysqliI think something is missing.I want to know how to restore mysqli features? If possible, a step by step guide to teach me. Thank you very much.
How to reconfigure PHP
centos;php;mysql;configure;reinstall