--- wp-settings.php     (revision 3003)
+++ wp-settings.php     (working copy)
@@ -34,9 +34,22 @@
 if ( !(phpversion() >= '4.1') )
        die( 'Your server is running PHP version ' . phpversion() . ' but WordPress requires at least 4.1' );
 
-if ( !extension_loaded('mysql') )
-       die( 'Your PHP installation appears to be missing the MySQL which is required for WordPress.' );
-
+if ( !extension_loaded('mysql') ) {
+       if(version_compare(phpversion(), '5.0', '>=') || ini_get('safe_mode') == true)
+               die('Your PHP installation appears to be missing the mysql module which is required for WordPress.');
+       if(defined('PHP_SHLIB_SUFFIX'))
+               $prefix = (PHP_SHLIB_SUFFIX == 'dll') ? 'php_' : '';
+       else {
+               if(strtolower(substr(PHP_OS, 0, 3)) == 'win') {
+                       $prefix = 'php_';
+                       define('PHP_SHLIB_SUFFIX', 'dll');
+               } else
+                       define('PHP_SHLIB_SUFFIX', 'so');
+       }
+       if(!dl($prefix . 'mysql.' . PHP_SHLIB_SUFFIX))
+               die( 'Your PHP installation appears to be missing the MySQL which is required for WordPress.' );
+}
+       
 function timer_start() {
        global $timestart;
        $mtime = explode(' ', microtime() );