<?php
$a = array(
0 => "apple",
"b" => "banana",
3 => "cow",
"wrench" => "duck"
);
$b = array_intersect_key($a, array_flip(array_filter(array_keys($a), 'is_string')));
var_dump($b);
- 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 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
- array(2) {
["b"]=>
string(6) "banana"
["wrench"]=>
string(4) "duck"
}
- Output for 5.0.0 - 5.0.5
- Fatal error: Call to undefined function array_intersect_key() in /in/aj9FD on line 9
Process exited with code 255. - Output for 4.4.5 - 4.4.9
- Fatal error: Call to undefined function: array_intersect_key() in /in/aj9FD on line 9
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/aj9FD on line 9
Process exited with code 255. - Output for 4.3.0 - 4.3.1
- Fatal error: Call to undefined function: array_intersect_key() in /in/aj9FD on line 9
preferences:
302.01 ms | 401 KiB | 464 Q