3v4l.org

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<?php $array_1 = array(1,2,3,4,5); $array_2 = array('a','b','c'); $positions = array(1,3,4); $positionArray = array_combine($positions, $array_2); foreach($positionArray as $key => $value){ array_splice($array_1, $key, 0, $value); } print_r($array_1);
Output for 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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14
Array ( [0] => 1 [1] => a [2] => 2 [3] => b [4] => c [5] => 3 [6] => 4 [7] => 5 )
preferences:
149.18 ms | 407 KiB | 5 Q