php數組的排序有關問題，求解

php數組的排序問題，求解！
/**
*對數組按username從左至右匹配排序，username一樣則按cardid從大到小排序
*/
$list = array(
0=>array('cardid'=>1001,'username'=>'zhangsan'),
1=>array('cardid'=>1002,'username'=>'zhangsanfeng'),
2=>array('cardid'=>1003,'username'=>'SBzhangsan'),
3=>array('cardid'=>1005,'username'=>'SBzhangsanisyou'),
4=>array('cardid'=>1007,'username'=>'zhangsan'),
);
匹配字串：$q = 'zhangsan';

排序後的結果應該為
$list = array(
0=>array('cardid'=>1007,'username'=>'zhangsan'),
1=>array('cardid'=>1001,'username'=>'zhangsan'),
2=>array('cardid'=>1003,'username'=>'zhangsanfeng'),
3=>array('cardid'=>1005,'username'=>'SBzhangsanisyou'),
4=>array('cardid'=>1007,'username'=>'SBzhangsan'),
);


------解決方案--------------------
SQL好使不

SQL code

SELECT * FROM table WHERE username LIKE  '%zhangsan%' ORDER BY LOCATE('zhangsan',username) ASC , cardid DESC
------解決方案--------------------
人家要對數組排序，那就對數組排序唄
  

   PHP code
   
$list = array(0=>array('cardid'=>1001,'username'=>'zhangsan'),1=>array('cardid'=>1002,'username'=>'zhangsanfeng'),2=>array('cardid'=>1003,'username'=>'SBzhangsan'),3=>array('cardid'=>1005,'username'=>'SBzhangsanisyou'),4=>array('cardid'=>1007,'username'=>'zhangsan'),);$q = 'zhangsan';foreach($list as $v) {  $r1[] = $v['cardid'];  list($r2[], $r3[]) = explode($q, $v['username']);}array_multisort($r2, $r3, $r1, SORT_DESC, $list);print_r($list);
------解決方案--------------------
樓主給的結果有悖於自己的描述噢。


    

     PHP code
     
"sort.php" 29L, 801C written                                                                                                                                   [User:root Time:02:58:29 Path:/home/liangdong/php]$ php sort.php Array(    [4] => Array        (            [cardid] => 1007            [username] => zhangsan        )    [1] => Array        (            [cardid] => 1002            [username] => zhangsanfeng        )    [0] => Array        (            [cardid] => 1001            [username] => zhangsan        )    [3] => Array        (            [cardid] => 1005            [username] => SBzhangsanisyou        )    [2] => Array        (            [cardid] => 1003            [username] => SBzhangsan        ))[User:root Time:02:58:31 Path:/home/liangdong/php]$ cat sort.php 1001,'username'=>'zhangsan'),                        array('cardid'=>1002,'username'=>'zhangsanfeng'),                        array('cardid'=>1003,'username'=>'SBzhangsan'),                        array('cardid'=>1005,'username'=>'SBzhangsanisyou'),                        array('cardid'=>1007,'username'=>'zhangsan'),                );$name = "zhangsan";uasort($list, function($left, $right) {                                global $name;                                $lndx = strpos($left['username'], $name);                                $rndx = strpos($right['username'], $name);                                $lid = $left['cardid'];                                $rid = $right['cardid'];                                if ($lndx === false && $rndx !== false ||                                         $lndx !== false && $rndx === false) { // 不包含名字的算小的                                        return $lndx === false ? -1 : 1;                                }                                if ($lndx == $rndx) {                                        return $rid - $lid;                                } else {                                        return $lndx - $rndx;                                }                });print_r($list);?>
