Unable to load dynamic library

I'm getting

Code:

PHP Warning: PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20131226/pdo_mysql.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20131226/pdo_mysql.so: 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/local/lib/php/extensions/no-debug-non-zts-20131226/pdo_mysql.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20131226/pdo_mysql.so: cannot open shared object file: No such file or directory in Unknown on line 0

these error.

I have run grep extension /usr/local/lib/php.ini from ssh as root and the output is as follow:

Code:

; dynamically loaded extension (either a PHP extension or a Zend extension),
; you may only use these constants *after* the line that loads the extension.
; leading '/'. You must also specify the file extension being used including
; Directory in which the loadable extensions (modules) reside.
extension_dir = "/usr/local/lib/php/extensions/no-debug-non-zts-20131226"
zend_extension = "/usr/local/IonCube/ioncube_loader_lin_5.6.so"
; If you wish to have an extension loaded automatically, use the following
extension = "pdo_sqlite.so"
extension = "pdo.so"
extension = "imagick.so"
extension = "pdo_mysql.so"
; needs to go here. Specify the location of the extension with the
; extension_dir directive above.
; dictionary files. Include the base filename, but not the file extension.

please help me solve the issue.