PHP Array Exercises : Get an array of all elements which have the keys that are present in another array
PHP Array: Exercise-49 with Solution
Write a PHP script to get an array containing all the entries of an array which have the keys that are present in another array.
<?php $first_array = array('c1' => 'Red', 'c2' => 'Green', 'c3' => 'White', 'c4' => 'Black'); $second_array = array('c2', 'c4'); print_r(array_intersect_key($first_array, array_flip($second_array))); ?>
Array ( [c2] => Green [c4] => Black )
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