With that script you would enter this: 1) First choose directory. 2) Files: Enter the file name or if you want to change all files that end in php, enter .php 3) Search: Enter what area of the file to look for by searching for a part of the code. 4) Replace: Replace code your searching for with new code. So if your want to add error_reporting(0); to your php files this would be the entries: Directory: your directory Files: .php Search: <?php Replace: <?php error_reporting(0);