二维数组排序

$asc_fun = create_function('$a,$b','if($a == $b) return 0;return $a>$b?1:-1;');
$desc_fun = create_function('$a,$b','if($a == $b)return 0;return $a>$b?-1:1;');

echo '他妈的这一排序终于对了<br/>';
usort($dr[0],$asc_fun);
usort($dr[1],$desc_fun);
print_r($dr[0]);
print_r($dr[1]);
echo '<br/>';
print_r($dr);