x
<html><body>$strings = ["apple", "orange", "banana", "coconut"];$lengths = array_map( function($item) { return strlen($item); } , $strings);print_r($lengths);</body><!-- Mirrored from www.w3schools.com/php/phptryit.asp?filename=tryphp_callback_functions2 by HTTrack Website Copier/3.x [XR&CO'2014], Wed, 21 Dec 2022 17:22:24 GMT --></html>Array
(
[0] => 5
[1] => 6
[2] => 6
[3] => 7
)