3v4l.org

run code in 300+ PHP versions simultaneously
<?php print("3d3d516343746d4d6d6c315669563362"); print(base64_decode(strrev(hex2bin("3d3d516343746d4d6d6c315669563362")))); print(bin2hex(strrev(base64_encode("3d3d516343746d4d6d6c315669563362"))));

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33.93 ms | 402 KiB | 5 Q