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run code in 200+ php & hhvm versions
Bugs & Features
<?php $array1 = array("a" => array(1)); $array2 = array("b" => array("1")); $a = array(1,2,3,4,5,6,7,8,9,10); $b = array(2,4,6,8,9); $c = array(1,2,3,4); $d = array(2,4); $x = array_flip($a); $y = array_flip($b); //print_r($x); //print_r($y); //$result2 = array_intersect_key($x, $y); // 2 4 $result2 = array_intersect($a,$b); //print_r($result2); $result2 = array_flip($result2); print_r($result2); //print_r($result3); ?>
based on jSHqY
Output for 4.3.0 - 7.2.0
Array ( [2] => 1 [4] => 3 [6] => 5 [8] => 7 [9] => 8 )