<?php
$string = <<<DATA
#TEST string "quoted part\" witch escape" other "quoted string"
DATA;
$regex = '~\\\\[\'"](*SKIP)(*FAIL)|["\']~';
echo $string;
?>
PD9waHAKCiRzdHJpbmcgPSA8PDxEQVRBCiNURVNUIHN0cmluZyAicXVvdGVkIHBhcnRcIiB3aXRjaCBlc2NhcGUiIG90aGVyICJxdW90ZWQgc3RyaW5nIgpEQVRBOwoKJHJlZ2V4ID0gJ35cXFxcW1wnIl0oKlNLSVApKCpGQUlMKXxbIlwnXX4nOwoKJHN0cmluZyA9IHByZWdfcmVwbGFjZSgkcmVnZXgsICcnLCAkc3RyaW5nKTsKZWNobyAkc3RyaW5nOwoKPz4=