Linux – Getting shared library error with php and thesql module on centos

I first installed php5.5 and mysql5.6 then due to some pacakge problem i had to remove them and install php5.3 and mysql 5.1 from yum.

I php is not detecting any extensions and giving me this error

[root@ipserver etc]# php -m
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib64/php/modules/mysql.so' - libmysqlclient.so.16: cannot open shared object file: No such file or directory in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib64/php/modules/mysqli.so' - libmysqlclient.so.16: cannot open shared object file: No such file or directory in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib64/php/modules/pdo_mysql.so' - libmysqlclient.so.16: cannot open shared object file: No such file or directory in Unknown on line 0
[PHP Modules]

I do have files in that directory and they have read permissions

[root@ipserver etc]# php --ini
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib64/php/modules/mysql.so' - libmysqlclient.so.16: cannot open shared object file: No such file or directory in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib64/php/modules/mysqli.so' - libmysqlclient.so.16: cannot open shared object file: No such file or directory in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib64/php/modules/pdo_mysql.so' - libmysqlclient.so.16: cannot open shared object file: No such file or directory in Unknown on line 0
Configuration File (php.ini) Path: /etc
Loaded Configuration File:         /etc/php.ini
Scan for additional .ini files in: /etc/php.d
Additional .ini files parsed:      /etc/php.d/mysql.ini,
/etc/php.d/mysqli.ini,
/etc/php.d/pdo_mysql.ini

EDIT:

I tried copy only mysql.so file somewhere else and harcode in php.ini

extension=/etc/mysql.so

i get this

PHP Warning:  PHP Startup: Unable to load dynamic library '/etc/mysql.so' - libmysqlclient.so.16: cannot open shared object file: No such file or directory in Unknown on line 0
Configuration File (php.ini) Path: /etc
Loaded Configuration File:         /etc/php.ini
Scan for additional .ini files in: /etc/php.d
Additional .ini files parsed:      (none)