3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo preg_replace('/%([0-9a-f]{2})/ie', 'chr(hexdec($1))', (string) "Industrial%2520%2526%2520Financial%2520Systems%252C%2520IFS%2520UK%2520Ltd"); echo raw_urldecode("Industrial%2520%2526%2520Financial%2520Systems%252C%2520IFS%2520UK%2520Ltd");

preferences:
41.49 ms | 402 KiB | 5 Q