3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $size=8; $path=[]; function danger($a,$b){ for($i=0;$i<count($path);$i++){ if($i==$a) return TRUE; elseif($path[i]==$b) return TRUE; elseif($i==$path[i]&&$a==$b) return TRUE; } return FALSE; } function move($row){ if($row>$size){ for($i=0;$i<count($path);$i++){ echo $path[i],' '; } echo '<br/>'; } else{ for($i=0;$i<size;$i++){ if(!danger($row,$i)){ $path[$row-1]=$i; move($row+1); } } } } ?>
based on HcQWE
Output for 5.4.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/QHDRV on line 3
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/QHDRV on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/QHDRV on line 3
Process exited with code 255.