php比较多维数组中值的大小排序实现代码

php  /  管理员 发布于 8年前   212

function cmp($a, $b){
if ($a["vote_num"] == $b["vote_num"]) {
return 0;
}
return ($a["vote_num"] > $b["vote_num"]) ? -1 : 1;
}

$arr = Array
(
0 => Array
(
o_id => 1861,
o_name => 2,
o_pic => 'http://g..net.cn/image.gif' ,
o_detail => 人人,
vote_num => 1
),

1 => Array
(
o_id => 1844,
o_name => 芭比,
o_pic => 'http://upload..net.cn/game_image/dfxxz/dfVIP.files/shenxiandao.jpg',
o_detail => 也是美女呢,
vote_num => 2
),

2 => Array
(
o_id => 1843,
o_name => 程程,
o_pic => 'http://g..net.cn./upload_img/2011-06/31554_4d0088da7a61ad9c8c02a530be94d98e.png',
o_detail => 美女哦,
vote_num => 3
)
);
uasort($arr, ”cmp“);
echo ‘< pre style="text-align:left" >';
print_r ($arr);
echo ‘< / pre >';