Ticket #31644: 31644.diff

src/wp-includes/wp-db.php

@@ -2810 +2810 @@
                                         $client_version = mysql_get_client_info();
                                 }
 
-                                return version_compare( $client_version, '5.5.3', '>=' );
+                                if ( false !== stristr( $client_version, 'mysqlnd' ) ) {
+                                        preg_match( '/[\d]+[\.][\d]+[\.][\d]+/', $client_version, $match );
+                                        return version_compare( $match[0], '5.0.9', '>=' );
+                                } else {
+                                        return version_compare( $client_version, '5.5.3', '>=' );
+                                }
                 }
 
                 return false;