$ar = array(
  array(0,2,3,4,5),
  array(1,0,3,0,5),
  array(1,2,3,4,5),
  array(1,2,0,4,0),
);

unset($ar[3]);
unset($ar[1]);
for($i=0; $i<5; $i++) {
  $m = 0;
  foreach($ar as $v) $m |= $v[$i];
  echo $m;
}

------解决方案--------------------

PHP code

<?php
function split2Array($n, $repeat = 3)
{
    $result = array();
    for($i = 0; $i < $n; $i++)
    {
        for($j = 0; $j < $repeat; $j++)
        {
            $result[($i + $j) % ($repeat + 1)][$i] = $i + 1;
        }
    }
    return $result;
}
print_r(split2Array(7, 4));
?>