PHP根據日期循環

Question

好吧，所以我有約151個元素的數組，並有一個日期字段作爲其中一個元素。陣列是兩週的範圍。我想統計第一週有多少元素，以及第二週有多少元素。這是我的示例數組。

[0] => Array 
    (
     [0] => 4d50 
     [date] => 07-10-2010 
     [telephone] => something 
     [Sno] => 1 
    ) 

[1] => Array 
    (
     [0] => 4g50 
     [date] => 07-03-2010 
     [telephone] => something 
     [Sno] => 1 
    ) 

[2] => Array 
    (
     [0] => 4s50 
     [date] => 06-29-2010 
     [telephone] => something 
     [Sno] => 1 

Answer 1

function getweek($a){ 
    //altered code., m-d-Y is no a format strtotime likes): 
    return DateTime::createFromFormat('m-d-Y',$a['date'])->format('W'); 
} 
var_dump(array_count_values(array_map('getweek',$inputarray)));