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 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
3
preferences:
123.07 ms | 407 KiB | 5 Q