3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function array_swap(&$input, $num) { $tmp = $input[0]; $input[0] = $input[$num]; return $input[$num] = $tmp; } $input = [4, 5, 8, 9, 1, 7, 2]; function xsort($oldArray) { $newArray = array(); foreach($oldArray as $arr){ $newArray[] = array_swap($oldArray, $arr); } return $newArray; } var_dump(xsort($input));
based on hhuAk
Output for 5.4.0 - 7.2.0
Notice: Undefined offset: 8 in /in/ZtrIL on line 6 Notice: Undefined offset: 9 in /in/ZtrIL on line 6 Notice: Undefined offset: 7 in /in/ZtrIL on line 6 array(7) { [0]=> int(4) [1]=> int(1) [2]=> int(7) [3]=> NULL [4]=> NULL [5]=> int(5) [6]=> NULL }
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/ZtrIL on line 10
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/ZtrIL on line 10
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/ZtrIL on line 10
Process exited with code 255.