3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = bin2hex(base64_decode("WS1YBbOB8Lh+R6uw9yXR5IFpilyJgxukLWcOvUpdHPI=")); echo strtoupper($str); ?>
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51.7 ms | 402 KiB | 5 Q