二维数组按照某一键值进行排序 

 1 <?
 2 $arr=array(array('id'=>'1','name'=>'lily','start'=>'20110101','end'=>'20110103'),
 3 array('id'=>'2','name'=>'may','start'=>'20110101','end'=>'20110105'));
 4 
 5 
 6 class array_sorter
 7 {
 8    var $skey = false;
 9    var $sarray = false;
10    var $sasc = true;
11 
12    function array_sorter(&$array, $key, $asc=true)
13    {
14        $this->sarray = $array;
15        $this->skey = $key;
16        $this->sasc = $asc;
17    }
18 
19    function sortit($remap=true)
20    {
21        $array = &$this->sarray;
22        uksort($array, array($this, "_as_cmp"));
23        if ($remap)
24        {
25            $tmp = array();
26            while (list($id, $data) = each($array))
27                $tmp[] = $data;
28            return $tmp;
29        }
30        return $array;
31    }
32    function _as_cmp($a, $b)
33    {
34        if (!is_array($a) && !is_array($b))
35        {
36            $a = $this->sarray[$a][$this->skey];
37            $b = $this->sarray[$b][$this->skey];
38        }
39 
40        //if string - use string comparision
41        if (!ctype_digit($a) && !ctype_digit($b))
42        {
43            if ($this->sasc)
44                return strcasecmp($a, $b);
45            else 
46                return strcasecmp($b, $a);
47        }
48        else
49        {
50            if (intval($a) == intval($b)) 
51                return 0;
52 
53            if ($this->sasc)
54                return (intval($a) > intval($b)) ? -1 : 1;
55            else
56                return (intval($a) > intval($b)) ? 1 : -1;
57        }
58    }
59 
60 }
61 
62 function multi_sort(&$array, $key, $asc=true)
63 {
64        $sorter = new array_sorter($array, $key, $asc);
65        return $sorter->sortit();
66 }
67    //false和true控制升降序,end为数组键值
68 $my_array = multi_sort($arr, "end", false);
69 print_r($my_array);
70 
71 
72 ?>

 

posted @ 2012-10-15 17:39  tinyphp  Views(1153)  Comments(0)  Edit  收藏  举报