How to Fix “PHP Warning: PHP Startup: mcrypt: Unable to initialize module” on Centos 5
I found this error message after upgrading PHP 5.1.6 to 5.2.14 The problem happens when there is a mismatch version of php-mcrypt module with php installed in the server. You can check the version using this command line: To fix this error, we have to update php-mcrypt module: