3v4l.org

run code in 300+ PHP versions simultaneously
<?php namespace Foo; define('Foo\\null', true, true); define('Foo\\false', true, true); define("Foo\\INF", 1337, true); echo 'null:';if (null) echo "TRUE";else echo "FALSE"; echo "\nfalse:";if (false) echo "TRUE";else echo "FALSE"; echo "\ntrue:";if (true) echo "TRUE";else echo "FALSE"; $n=982173049871208374018920439819010298370419287348172038470703498701827034897012897340817209384701982; $n*=$n;$n*=$n; echo "\n2^5000:".$n;

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37.13 ms | 402 KiB | 5 Q