3v4l.org

run code in 300+ PHP versions simultaneously
<?php $input = array( 'abc' => 0, 'foo-bcd' => 1, 'foo-def' => 1, 'foo-xyz' => 0, ); $filtered = array_filter($input, function ($key) { return strpos($key, 'foo-') === 0; }, ARRAY_FILTER_USE_KEY); print_r($filtered);
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [foo-bcd] => 1 [foo-def] => 1 [foo-xyz] => 0 )

This tab shows result from various feature-branches currently under review by the php developers. Contact me to have additional branches featured.

Active branches

Archived branches

Once feature-branches are merged or declined, they are no longer available. Their functionality (when merged) can be viewed from the main output page

preferences:
24.72 ms | 405 KiB | 5 Q