3v4l.org

run code in 500+ PHP versions simultaneously
<?php $myvar = 0; if (empty($myvar)) { echo "It's empty."; } if(!isset($myvar)) { echo "It's not set."; }
Output for 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.35, 8.3.0 - 8.3.36, 8.4.1 - 8.4.27, 8.5.0 - 8.5.11
It's empty.

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18.47 ms | 1508 KiB | 8 Q