添加項目到多維數組中的for循環

Question

這是我的數組，我想添加一些元素，使其像2個數組

1）

array(7) { 
    [0] => array(3) { 
    ["name"] => string(9) "airG Chat" 
    ["product_id"] => int(2469) 
    ["price"] => string(4) "0.00" 
    } 

    [1] => array(3) { 
    ["name"] => string(9) "PingChat!" 
    ["product_id"] => int(7620) 
    ["price"] => string(4) "0.00" 
    } 
    [2] => array(3) { 
    ["name"] => string(25) "MobiEXPLORE Zagreb County" 
    ["product_id"] => int(8455) 
    ["price"] => string(4) "0.00" 
    } 
} 

添加項目後，應像這樣，我嘗試使用每個功能，但沒有工作。 2）

array(7) { 
    [0] => array(3) { 
    ["name"] => string(9) "airG Chat" 
    ["product_id"] => int(2469) 
    ["price"] => string(4) "0.00" 
    ["description"] => string(23) "this is the custom test" 
    ["brief_description"] => string(23) "this is the custom test" 
    } 

    [1] => array(3) { 
    ["name"] => string(9) "PingChat!" 
    ["product_id"] => int(7620) 
    ["price"] => string(4) "0.00" 
    ["description"] => string(23) "this is the custom test" 
    ["brief_description"] => string(23) "this is the custom test" 
    } 
    [2] => array(3) { 
    ["name"] => string(25) "MobiEXPLORE Zagreb County" 
    ["product_id"] => int(8455) 
    ["price"] => string(4) "0.00" 
    ["description"] => string(23) "this is the custom test" 
    ["brief_description"] => string(23) "this is the custom test" 
    } 
} 

Answer 1

使用foreach參考（&）：

foreach($data as &$datum) { 
    $datum["description"] = "this is the custom test"; 
    $datum["brief_description"] = "this is the custom test"; 
} 

如果你不希望使用&（to avoid this problem），你可以做

foreach($data as $i => $datum) { 
    $data[$i]["description"] = "this is the custom test"; 
    $data[$i]["brief_description"] = "this is the custom test"; 
} 

Answer 2

如果您使用的foreach，並希望改變原來的數組，你需要添加&。

foreach ($arr as &$item) { 
    $item["description"] = "this is the custom test"; 
    $item["brief_description"] = "this is the custom test"; 
}