3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = array( 0 => 'string1', 2 => 'string2', 4 => 'string3', 5 => 'string4'); $arrays =$array; print_r($array); $array=array(); $i=1; foreach($arrays as $k => $item) { $array[$i]=$item; unset($arrays[$k]); $i++; } print_r($array);
Output for 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 - 7.2.34, 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] => string1 [2] => string2 [4] => string3 [5] => string4 ) Array ( [1] => string1 [2] => string2 [3] => string3 [4] => string4 )
preferences:
291.1 ms | 404 KiB | 385 Q