Online PHP editor | output for Hkv7h

<?php $str="æøå\x01"; var_dump(["str"=>$str,"escapeshellarg"=>escapeshellarg($str), "quoteshellarg"=>quoteshellarg($str)]); /** * quotes shell arguments * (doing a better job than escapeshellarg) * * @param string $arg * @throws UnexpectedValueException if $arg contains null bytes * @return string */ function quoteshellarg(string $arg): string { if (PHP_OS_FAMILY === 'Linux') { // PHP's built-in escapeshellarg() for linux is garbage, corrupting-or-stripping UTF-8 unicode characters like "æøå" // and stripping non-printable characters like \x01 // while single-quoted shell arguments in Linux are binary safe execpt for 2 bytes: \x00 and \x27 // to prevent corruption of UTF-8 characters, we implement our own shell argument quoting for Linux. if (false !== strpos($arg, "\x00")) { throw new UnexpectedValueException('linux shell arguments cannot contain null bytes!'); } return "'" . strtr($arg, array("'" => "'\\''")) . "'"; } // fallback to the php built-in function return escapeshellarg($arg); }