3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr=[]; for($i=7;$i<=16; $i++) { $arr[] = "$i:00"; $arr[] = "$i:30"; } print_r($arr);
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 - 8.3.26, 8.4.1 - 8.4.13
Array ( [0] => 7:00 [1] => 7:30 [2] => 8:00 [3] => 8:30 [4] => 9:00 [5] => 9:30 [6] => 10:00 [7] => 10:30 [8] => 11:00 [9] => 11:30 [10] => 12:00 [11] => 12:30 [12] => 13:00 [13] => 13:30 [14] => 14:00 [15] => 14:30 [16] => 15:00 [17] => 15:30 [18] => 16:00 [19] => 16:30 )
preferences:
151.3 ms | 408 KiB | 5 Q