<?php
$a = ['a' => ['1','2']];
$b = ['a' => ['3','4']];
var_dump(array_merge_recursive($a, $b)['a']);
var_dump($a['a'] + $b['a']);
- Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
- array(4) {
[0]=>
string(1) "1"
[1]=>
string(1) "2"
[2]=>
string(1) "3"
[3]=>
string(1) "4"
}
array(2) {
[0]=>
string(1) "1"
[1]=>
string(1) "2"
}
preferences:
174.52 ms | 404 KiB | 192 Q