3v4l.org

run code in 300+ PHP versions simultaneously
<?php $url = 'http%3A%2F%2Fwww.my2.com%2Fapi.php%3Fkey1%3Dxxx%26key2%3Dyyy%26key3%3Dzzz'; echo $url; $url = urldecode($url); echo $url; $url = base64_encode($url); echo $url;

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34.71 ms | 402 KiB | 5 Q