将关联数组与日期排序为日期顺序

Question

So I have an associative array that's 1 level deep (excerpt as below) but there are a lot of entries

[0] => Array
            (
                [Electronic] => 1
                [Scope] => Intruder Alarm Systems                                                                              
                [Issued Date] => 2013-07-23 01:03:41
                [Customer Name] => qqqq
                [Certificate Number] => 1291087
            )

        [1] => Array
            (
                [Electronic] => 1
                [Scope] => CCTV Systems                                                                                        
                [Issued Date] => 2013-07-23 01:02:01
                [Customer Name] => qqqqq
                [Certificate Number] => 1291085
            )

        [2] => Array
            (
                [Electronic] => 1
                [Scope] => CCTV Systems                                                                                        
                [Issued Date] => 2013-07-17 07:15:06
                [Customer Name] => Accent Foundation Ltd
                [Certificate Number] => 1290822
            )

I need a way of looping through this array and re-ordering it so the newest is first and so on. Basically as if you had selected it from a DB and used "ORDER BY "Issued Date" DESC"

I can't really think of a way of doing this.

Answer 1

You can use usort with your own custom function to sort.

usort($array, function ($a, $b) {
     $atime = strtotime($a['Issue Date']);
     $btime = strtotime($b['Issue Date']);
     return $atime - $btime;
});