- var_dump: documentation ( source)
- bin2hex: documentation ( source)
- str_replace: documentation ( source)
<?php
$code = "-\r-\r\n-\n-";
//var_dump($code);
$code = str_replace("\r\n", "\n", $code);
var_dump(bin2hex($code));
$code = str_replace(array("\r\n", "\r"), "\n", $code);
var_dump(bin2hex($code));