http://www.oschina.net/question/167679_56466 类似这种效果，要怎么实现，还是有更好的方法
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- PHP code
$a = Array( '0' => Array('id' => 3,'sid' => 0), '1' => Array('id' => 4,'sid' => 0), '2' => Array('id' => 5,'sid' => 3), '3' => Array('id' => 6,'sid' => 0), '4' => Array('id' => 7,'sid' => 4), '5' => Array('id' => 8,'sid' => 0),);function cmsort($ar, $sid=0, &$res=array()) { foreach($ar as $r) { if($r['sid'] == $sid) { $res[] = $r; cmsort($ar, $r['id'], $res); } } return $res;}var_export(cmsort($a));