添加一個鍵 - 值對，內陣列

Question

我已經在陣列數據作爲

$a = array (
    [2011-07-09] => array(['new'] => 12), 
    [2011-07-10] => array(['new'] => 15) 
); 

現在我想另一個關鍵值對添加到內陣列，以便輸出將是像

$a = array (
    [2011-07-09] => array(['new'] => 12, ['recurring'] => 52), 
    [2011-07-10] => array(['new'] => 15, ['recurring'] => 80) 
); 

我該怎麼做？

Answer 1

$a['2011-07-09']['recurring'] = 52; 
$a['2011-07-10']['recurring'] = 80; 

Answer 2

根據您打算如何實現recurring鍵，這樣就可以了：

$a['2011-07-09']['recurring'] = 52; 
$a['2011-07-10']['recurring'] = 80;