3v4l.org

run code in 300+ PHP versions simultaneously
<?php $hot = array( 'hotObj 1', 'hotObj 2', 'hotObj 3', 'hotObj 4', ); $new = array( 'newObj 1', 'newObj 2', ); $result = []; foreach ($hot as $key => $value) { $result[] = $value; if(isset($new[$key])){ $result[] = $new[$key]; } } print_r($result);
Output for 5.4.2 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Array ( [0] => hotObj 1 [1] => newObj 1 [2] => hotObj 2 [3] => newObj 2 [4] => hotObj 3 [5] => hotObj 4 )
preferences:
209.7 ms | 404 KiB | 241 Q