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<?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); ?>
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Warning: Undefined variable $result2 in /in/1UfNI on line 13 Array ( [1] => 2 [3] => 4 )
Output for 5.0.4 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined variable: result2 in /in/1UfNI on line 13 Array ( [1] => 2 [3] => 4 )
Output for 7.3.32 - 7.3.33
Array ( [1] => 2 [3] => 4 )
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.3
Notice: Undefined variable: result2 in /in/1UfNI on line 13 Array ( [1] => 2 [3] => 4 )
preferences:
230.2 ms | 402 KiB | 423 Q