3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $arr = array(1,2,3,4,5,6,7,8,9,10,'a','b','c','d','e','f','g','h','i','j'); $tmp0 = $arr[0]; $tmp1 = $arr[10]; $n=10; for($i=0,$j=$n;$i<count($arr)-1;$i++,$j++){ // echo(" i: ".$i); $arr[$i]=$tmp0; $tmp0 = $arr[$i+1]; // echo(" tmp0: ".$tmp0); $arr[$i+1]=$tmp1; $tmp1 = $arr[$j+1]; // echo(" tmp1: ".$tmp1); // echo("\n"); printIt($arr); echo("\n\n"); } echo("\n"); function printIt($arr){ for($i=0;$i<count($arr);$i++){ echo($arr[$i]." "); } } ?>
Output for 5.3.0 - 5.6.28, 7.0.0 - 7.1.0
1 a 3 4 5 6 7 8 9 10 a b c d e f g h i j 1 2 b 4 5 6 7 8 9 10 a b c d e f g h i j 1 2 3 c 5 6 7 8 9 10 a b c d e f g h i j 1 2 3 4 d 6 7 8 9 10 a b c d e f g h i j 1 2 3 4 5 e 7 8 9 10 a b c d e f g h i j 1 2 3 4 5 6 f 8 9 10 a b c d e f g h i j 1 2 3 4 5 6 7 g 9 10 a b c d e f g h i j 1 2 3 4 5 6 7 8 h 10 a b c d e f g h i j 1 2 3 4 5 6 7 8 9 i a b c d e f g h i j Notice: Undefined offset: 20 in /in/5X8W3 on line 13 1 2 3 4 5 6 7 8 9 10 j b c d e f g h i j Notice: Undefined offset: 21 in /in/5X8W3 on line 13 1 2 3 4 5 6 7 8 9 10 a c d e f g h i j Notice: Undefined offset: 22 in /in/5X8W3 on line 13 1 2 3 4 5 6 7 8 9 10 a b d e f g h i j Notice: Undefined offset: 23 in /in/5X8W3 on line 13 1 2 3 4 5 6 7 8 9 10 a b c e f g h i j Notice: Undefined offset: 24 in /in/5X8W3 on line 13 1 2 3 4 5 6 7 8 9 10 a b c d f g h i j Notice: Undefined offset: 25 in /in/5X8W3 on line 13 1 2 3 4 5 6 7 8 9 10 a b c d e g h i j Notice: Undefined offset: 26 in /in/5X8W3 on line 13 1 2 3 4 5 6 7 8 9 10 a b c d e f h i j Notice: Undefined offset: 27 in /in/5X8W3 on line 13 1 2 3 4 5 6 7 8 9 10 a b c d e f g i j Notice: Undefined offset: 28 in /in/5X8W3 on line 13 1 2 3 4 5 6 7 8 9 10 a b c d e f g h j Notice: Undefined offset: 29 in /in/5X8W3 on line 13 1 2 3 4 5 6 7 8 9 10 a b c d e f g h i
Output for hhvm-3.12.0
1 a 3 4 5 6 7 8 9 10 a b c d e f g h i j 1 2 b 4 5 6 7 8 9 10 a b c d e f g h i j 1 2 3 c 5 6 7 8 9 10 a b c d e f g h i j 1 2 3 4 d 6 7 8 9 10 a b c d e f g h i j 1 2 3 4 5 e 7 8 9 10 a b c d e f g h i j 1 2 3 4 5 6 f 8 9 10 a b c d e f g h i j 1 2 3 4 5 6 7 g 9 10 a b c d e f g h i j 1 2 3 4 5 6 7 8 h 10 a b c d e f g h i j 1 2 3 4 5 6 7 8 9 i a b c d e f g h i j Notice: Undefined index: 20 in /in/5X8W3 on line -1 1 2 3 4 5 6 7 8 9 10 j b c d e f g h i j Notice: Undefined index: 21 in /in/5X8W3 on line -1 1 2 3 4 5 6 7 8 9 10 a c d e f g h i j Notice: Undefined index: 22 in /in/5X8W3 on line -1 1 2 3 4 5 6 7 8 9 10 a b d e f g h i j Notice: Undefined index: 23 in /in/5X8W3 on line -1 1 2 3 4 5 6 7 8 9 10 a b c e f g h i j Notice: Undefined index: 24 in /in/5X8W3 on line -1 1 2 3 4 5 6 7 8 9 10 a b c d f g h i j Notice: Undefined index: 25 in /in/5X8W3 on line -1 1 2 3 4 5 6 7 8 9 10 a b c d e g h i j Notice: Undefined index: 26 in /in/5X8W3 on line -1 1 2 3 4 5 6 7 8 9 10 a b c d e f h i j Notice: Undefined index: 27 in /in/5X8W3 on line -1 1 2 3 4 5 6 7 8 9 10 a b c d e f g i j Notice: Undefined index: 28 in /in/5X8W3 on line -1 1 2 3 4 5 6 7 8 9 10 a b c d e f g h j Notice: Undefined index: 29 in /in/5X8W3 on line -1 1 2 3 4 5 6 7 8 9 10 a b c d e f g h i
Output for hhvm-3.10.0
1 a 3 4 5 6 7 8 9 10 a b c d e f g h i j 1 2 b 4 5 6 7 8 9 10 a b c d e f g h i j 1 2 3 c 5 6 7 8 9 10 a b c d e f g h i j 1 2 3 4 d 6 7 8 9 10 a b c d e f g h i j 1 2 3 4 5 e 7 8 9 10 a b c d e f g h i j 1 2 3 4 5 6 f 8 9 10 a b c d e f g h i j 1 2 3 4 5 6 7 g 9 10 a b c d e f g h i j 1 2 3 4 5 6 7 8 h 10 a b c d e f g h i j 1 2 3 4 5 6 7 8 9 i a b c d e f g h i j Notice: Undefined index: 20 in /in/5X8W3 on line 13 1 2 3 4 5 6 7 8 9 10 j b c d e f g h i j Notice: Undefined index: 21 in /in/5X8W3 on line 13 1 2 3 4 5 6 7 8 9 10 a c d e f g h i j Notice: Undefined index: 22 in /in/5X8W3 on line 13 1 2 3 4 5 6 7 8 9 10 a b d e f g h i j Notice: Undefined index: 23 in /in/5X8W3 on line 13 1 2 3 4 5 6 7 8 9 10 a b c e f g h i j Notice: Undefined index: 24 in /in/5X8W3 on line 13 1 2 3 4 5 6 7 8 9 10 a b c d f g h i j Notice: Undefined index: 25 in /in/5X8W3 on line 13 1 2 3 4 5 6 7 8 9 10 a b c d e g h i j Notice: Undefined index: 26 in /in/5X8W3 on line 13 1 2 3 4 5 6 7 8 9 10 a b c d e f h i j Notice: Undefined index: 27 in /in/5X8W3 on line 13 1 2 3 4 5 6 7 8 9 10 a b c d e f g i j Notice: Undefined index: 28 in /in/5X8W3 on line 13 1 2 3 4 5 6 7 8 9 10 a b c d e f g h j Notice: Undefined index: 29 in /in/5X8W3 on line 13 1 2 3 4 5 6 7 8 9 10 a b c d e f g h i
Output for 4.3.0 - 5.2.17
1 a 3 4 5 6 7 8 9 10 a b c d e f g h i j 1 2 b 4 5 6 7 8 9 10 a b c d e f g h i j 1 2 3 c 5 6 7 8 9 10 a b c d e f g h i j 1 2 3 4 d 6 7 8 9 10 a b c d e f g h i j 1 2 3 4 5 e 7 8 9 10 a b c d e f g h i j 1 2 3 4 5 6 f 8 9 10 a b c d e f g h i j 1 2 3 4 5 6 7 g 9 10 a b c d e f g h i j 1 2 3 4 5 6 7 8 h 10 a b c d e f g h i j 1 2 3 4 5 6 7 8 9 i a b c d e f g h i j Notice: Undefined offset: 20 in /in/5X8W3 on line 13 1 2 3 4 5 6 7 8 9 10 j b c d e f g h i j Notice: Undefined offset: 21 in /in/5X8W3 on line 13 1 2 3 4 5 6 7 8 9 10 a c d e f g h i j Notice: Undefined offset: 22 in /in/5X8W3 on line 13 1 2 3 4 5 6 7 8 9 10 a b d e f g h i j Notice: Undefined offset: 23 in /in/5X8W3 on line 13 1 2 3 4 5 6 7 8 9 10 a b c e f g h i j Notice: Undefined offset: 24 in /in/5X8W3 on line 13 1 2 3 4 5 6 7 8 9 10 a b c d f g h i j Notice: Undefined offset: 25 in /in/5X8W3 on line 13 1 2 3 4 5 6 7 8 9 10 a b c d e g h i j Notice: Undefined offset: 26 in /in/5X8W3 on line 13 1 2 3 4 5 6 7 8 9 10 a b c d e f h i j Notice: Undefined offset: 27 in /in/5X8W3 on line 13 1 2 3 4 5 6 7 8 9 10 a b c d e f g i j Notice: Undefined offset: 28 in /in/5X8W3 on line 13 1 2 3 4 5 6 7 8 9 10 a b c d e f g h j Notice: Undefined offset: 29 in /in/5X8W3 on line 13 1 2 3 4 5 6 7 8 9 10 a b c d e f g h i