<?php
function columns($uarr)
{
$n=$uarr;
if (count($n) == 0)
 return array();
else if (count($n) == 1)
 return array_chunk($n[0], 1);
array_unshift($uarr, NULL);
 $transpose = call_user_func_array('array_map', $uarr);
return array_map('array_filter', $transpose);
}
function bead_sort($uarr)
{
foreach ($uarr as $e)
 $poles []= array_fill(0, $e, 1);
return array_map('count', columns(columns($poles)));
}
echo 'Original Array : '.'
';
print_r(array(5,3,1,3,8,7,4,1,1,3));
echo '
'.'After Bead sort : '.'
';
print_r(bead_sort(array(5,3,1,3,8,7,4,1,1,3)));
?>