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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 = $arr[10]; for($i=0;$i<count($arr)/2;$i+=2){ $arr[$i]=$tmp0; $tmp0 = $arr[$i+1]; $arr[$i+1]=$tmp1; $tmp1 = $arr[$i+11]; } for($i=0;$i<count($arr);$i++){ echo($arr[$i]." "); } ?>
Output for 4.3.0 - 7.1.0
1 a 2 b 4 d 6 f 8 h a b c d e f g h i j