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)
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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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