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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" => 1, "2" => 1, "3" => 1, "4" => 1); $b = array("2" => 1, "4" => 1, "5" => 1, "6" => 1); $c = array(1,2,3,4); $d = array(2,4); $result2 = array_intersect_key($a, $b); // 2 4 //$result3 = array_intersect($c,$d); print_r($result2); print_r($result3); ?>
based on 1UfNI

Shows result from various feature-branches currently under review from the php developers. Contact me to have additional branches featured.

Output for Typed properties v2
Array ( [2] => 1 [4] => 1 ) Notice: Undefined variable: result3 in /in/kSgiq on line 14
Output for Array change keys
Array ( [2] => 1 [4] => 1 ) Notice: Undefined variable: result3 in /in/kSgiq on line 14
Output for Lexical anon
Array ( [2] => 1 [4] => 1 ) Notice: Undefined variable: result3 in /in/kSgiq on line 14

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