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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 - 8.2.19, 8.3.0 - 8.3.7
Array ( [2] => 1 [4] => 1 ) Warning: Undefined variable $result3 in /in/kSgiq on line 14
Output for 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 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Array ( [2] => 1 [4] => 1 ) Notice: Undefined variable: result3 in /in/kSgiq on line 14
Output for 7.3.32 - 7.3.33
Array ( [2] => 1 [4] => 1 )
Output for 5.0.0 - 5.0.5
Fatal error: Call to undefined function array_intersect_key() in /in/kSgiq on line 10
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: array_intersect_key() in /in/kSgiq on line 10
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.4
Fatal error: Call to undefined function: array_intersect_key() in /in/kSgiq on line 10
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: array_intersect_key() in /in/kSgiq on line 10
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