3v4l.org

run code in 300+ PHP versions simultaneously
<?php // https://bugs.php.net/bug.php?id=71927 define('great','my'); $great='fantastic'; $my='my value'; echo "This is ", ${great }, "\n"; echo "This is ", ${ great}, "\n"; echo "This is ", ${ great }, "\n"; echo "This is ", ${great}, "\n";
Output for 5.5.0 - 5.5.35, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
This is my value This is my value This is my value This is my value
preferences:
208.02 ms | 404 KiB | 228 Q