3v4l.org

run code in 300+ PHP versions simultaneously
<?php $data = array_map( Closure::fromCallable('trim'), [' x', 'z '] ); var_dump($data);
Output for 8.1.32, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
array(2) { [0]=> string(1) "x" [1]=> string(1) "z" }

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