3v4l.org

run code in 300+ PHP versions simultaneously
<?php function hex2asc($str) { $str = join('',explode('\x',$str)); $len = strlen($str); for ($i=0;$i<$len;$i+=2) $data.=chr(hexdec(substr($str,$i,2))); return $data; } echo hex2asc("\x03\x01\x10\x04\xBD\xFD\xBF\x0A");

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31.93 ms | 402 KiB | 5 Q