3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = 'hello world'; $selectedString = ''; for ($i = 0; $i <= 5; $i++) { $selectedString[$i] = $string [$i]; } var_dump($selectedString);
Output for 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
string(6) "hello "
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.21, 7.0.0 - 7.0.20
array(6) { [0]=> string(1) "h" [1]=> string(1) "e" [2]=> string(1) "l" [3]=> string(1) "l" [4]=> string(1) "o" [5]=> string(1) " " }

preferences:
205.74 ms | 404 KiB | 307 Q