3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr1 =array( 0 => 518, 1 => 519, 2 => 520, 3 => 521, ); $arr2 =array( 0 => "1", 1 => "2", 2 => "3", 3 => "3", ); $new_array = array_combine($arr1,$arr2); print_r($new_array);

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31.96 ms | 405 KiB | 5 Q