对象的数组排序按对象字段 [英] Sort array of objects by object fields

问题描述

我怎么可以排序这个数组对象由它的领域，一个像名称或计数？

 阵列
（
    [0] =＆GT; stdClass的对象
        （
            [ID] =＆GT; 1
            [名] =＆GT;玛丽·简
            [计] =＆GT; 420
        ）    [1] =＆GT; stdClass的对象
        （
            [ID] =＆GT; 2
            [名] =＆GT;约翰尼
            [计] =＆GT; 234
        ）    [2] =＆GT; stdClass的对象
        （
            [ID] =＆GT; 3
            [名] =＆GT;凯西
            [计] =＆GT; 4354
        ）   ....
 

解决方案

使用 usort ，这里是一个例如改编自手册：

 函数CMP（$ A，$ B）
{
    返回STRCMP（$ A-＆GT;的名字，$ B-＆GT;名）;
}usort（$ your_data，CMP）;
 

---

的从进口评论编辑：的

如果你正在整理从类内部数组和你的排序功能 CMP 也定义在类内部，然后使用此：

  usort（$ your_data，阵列（$此，CMP））
 

How can I sort this array of objects by one of its fields, like name or count ?

  Array
(
    [0] => stdClass Object
        (
            [ID] => 1
            [name] => Mary Jane
            [count] => 420
        )

    [1] => stdClass Object
        (
            [ID] => 2
            [name] => Johnny
            [count] => 234
        )

    [2] => stdClass Object
        (
            [ID] => 3
            [name] => Kathy
            [count] => 4354
        )

   ....

解决方案

Use usort, here's an example adapted from the manual:

function cmp($a, $b)
{
    return strcmp($a->name, $b->name);
}

usort($your_data, "cmp");

---

edits imported from comments:

If you're sorting the array from inside the class and your sorting function cmp is also defined inside the class, then use this:

usort($your_data, array($this, "cmp"))

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