php.ini modification does not take effect


I'm having a problem with accessing to MySQL via PHP.
The problem is that PHP ties to find MySQL socket in /tmp/mysql.sock.

PHP returns "Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2) ".

But actual socket is in /var/lib/mysql/mysql.sock.
This is configured on my.cnf (socket          = /var/lib/mysql/mysql.sock -> mysqld & client) and php.ini as well (mysql.default_socket = /var/lib/mysql/mysql.sock).

But phpinfo() returns:

Configuration File (php.ini) Path       /usr/local/lib
MYSQL_SOCKET       /tmp/mysql.sock

My php.ini located in  /etc/php.ini

How do I solve this problem?
Please someone advise.

Thank you.
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sounds like you are editing the wrong ini/cnf file, make sure you are editing the one that mysql actually uses to run or php, sometimes servers have multiple ones, what is your server setup? and what time of linux os do you have?

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If we assume that you are editing the correct file ... have you restarted apache?
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