如何对多维PHP数组进行排序(基于最近的新闻时间实现) [英] How to sort multidimensional PHP array (recent news time based implementation)

问题描述

我以xml格式获取了一些最新新闻rss，并更改为json格式，这是android应用程序显示最新新闻所必需的.我有以下JSON数组...

i got some recent news rss in xml format and change in to json format , it is needed for android application to display recent news. i have an following JSON array ...

{
    "rss_news": [
        {
            "title": " ",
            "rss_original_src": "recent_news1(google news)",
            "rss_original_src_img": "",
            "link": "",
            "pubDate": "Tue, 19 Apr 2016 14:05:47 +0530",
            "description": ""
        },
 {
            "title": " ",
            "rss_original_src": "recent_news2(yahoo news)",
            "rss_original_src_img": "",
            "link": "",
            "pubDate": "Tue, 19 Apr 2016 16:05:47 +0530",
            "description": ""
        },
 {
            "title": " ",
            "rss_original_src": "recent_news3",
            "rss_original_src_img": "",
            "link": "",
            "pubDate": "Tue, 19 Apr 2016 11:05:47 +0530",
            "description": ""
        },
....
]
}

---

现在我需要...基于value(pubDate)的PHP多维数组排序..

---

Now i need ... PHP multi dimensional array sort based on value(pubDate)..

先谢谢了.

推荐答案

首先使用json_decode将JSON字符串转换为PHP数组.

First convert your JSON string to PHP array using json_decode.

使用 usort 对数组进行排序.

usort($array, 'sortByDate');

function sortByDate($a, $b) {
    $date1=$a['pubDate'];
    $date2=$b['pubDate'];

   //return value based on above two dates.
}

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