Execute php script before every php script

1. Make a .htaccess file in document root.
2. Write the following code:
3. php_value auto_prepend_file before_action.php
   php_value auto_append_file after_action.php
4. create a file before_action.php in document root
5. create a file after_action.php in document root
6. or you can use full file path such: /var/www/html/site.com/before_action.php

http://www.php.net/manual/en/ini.core.php#ini.auto-prepend-file