3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = array(1,2,3,4,5,6,7,8,9,10,'a','b','c','d','e','f','g','h','i','j'); $n=10; $tmp0 = $arr[0]; $tmp1 = $arr[$n]; for($i=0,$j=$n;$i<17;$i++,$j++){ echo($j."\n"); $arr[$i]=$tmp0; $tmp0=$arr[$i+1]; $arr[$i+1]=$arr[$j]; } printIt($arr); function printIt($arr){ for($i=0;$i<count($arr);$i++){ echo($arr[$i]." "); } } ?>
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
10 11 12 13 14 15 16 17 18 19 20 Warning: Undefined array key 20 in /in/ZgGRR on line 12 21 Warning: Undefined array key 21 in /in/ZgGRR on line 12 22 Warning: Undefined array key 22 in /in/ZgGRR on line 12 23 Warning: Undefined array key 23 in /in/ZgGRR on line 12 24 Warning: Undefined array key 24 in /in/ZgGRR on line 12 25 Warning: Undefined array key 25 in /in/ZgGRR on line 12 26 Warning: Undefined array key 26 in /in/ZgGRR on line 12 1 2 3 4 5 6 7 8 9 10 a b c d e f g i j
Output for 5.3.0 - 5.3.29, 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 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
10 11 12 13 14 15 16 17 18 19 20 Notice: Undefined offset: 20 in /in/ZgGRR on line 12 21 Notice: Undefined offset: 21 in /in/ZgGRR on line 12 22 Notice: Undefined offset: 22 in /in/ZgGRR on line 12 23 Notice: Undefined offset: 23 in /in/ZgGRR on line 12 24 Notice: Undefined offset: 24 in /in/ZgGRR on line 12 25 Notice: Undefined offset: 25 in /in/ZgGRR on line 12 26 Notice: Undefined offset: 26 in /in/ZgGRR on line 12 1 2 3 4 5 6 7 8 9 10 a b c d e f g i j
Output for 7.3.32 - 7.3.33
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 1 2 3 4 5 6 7 8 9 10 a b c d e f g i j
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
10 11 12 13 14 15 16 17 18 19 20 Notice: Undefined offset: 20 in /in/ZgGRR on line 12 21 Notice: Undefined offset: 21 in /in/ZgGRR on line 12 22 Notice: Undefined offset: 22 in /in/ZgGRR on line 12 23 Notice: Undefined offset: 23 in /in/ZgGRR on line 12 24 Notice: Undefined offset: 24 in /in/ZgGRR on line 12 25 Notice: Undefined offset: 25 in /in/ZgGRR on line 12 26 Notice: Undefined offset: 26 in /in/ZgGRR on line 12 1 2 3 4 5 6 7 8 9 10 a b c d e f g i j
preferences:
294.6 ms | 403 KiB | 462 Q