3v4l.org

run code in 300+ PHP versions simultaneously
<?php $mymap = ['foo' =>'bar', 'baz' => 'qux', 'dope' => 4]; $n = count($mymap); echo $n, PHP_EOL;
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.30, 8.0.0 - 8.0.20, 8.1.0 - 8.1.7
3

preferences:
167.51 ms | 409 KiB | 5 Q