3v4l.org

run code in 500+ PHP versions simultaneously
<?php $str = 'BCFSW|'; $arr = array('BF','BCF','BFS','BFW'); $str = str_split($str); Foreach($arr as $item){ $temp = str_split($item); $new[] = implode("",array_diff($str, $temp)) . implode("",array_intersect($temp, $str)); } var_dump($new);
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 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 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
array(4) { [0]=> string(6) "CSW|BF" [1]=> string(6) "SW|BCF" [2]=> string(6) "CW|BFS" [3]=> string(6) "CS|BFW" }
preferences:
119.4 ms | 1963 KiB | 4 Q