I need to find all backslashes in rows that start with "require_once" like these:
require_once $doc_root . "\inc\common.php";
require_once $doc_root . "\inc\admin_login.php";
require_once $doc_root . "\inc\usps_functions.php";
require_once $doc_root . '\lib\PDFMerger\PDFMerger.php';
I tried to use this one: