個人價值循環

Question

我運行一個循環：

$array = $_POST['d']; 

foreach($array as $a){ 
    print_r($a); 
} 

$數組包含數組（陣列的數量而變化） 和我得到這個結果。我只是想知道如何在循環中單獨調用這些值。例如：$東西= methv的值在循環

Array ( 
    [1173627548] => Array ( 
    [num] => 1173627548 
    [methv] => dont know 
    [q1] => - 
    [q2] => - 
    [q3] => U 
    [q4] => - 
    [comm] => 
    ) 
) 

很抱歉，如果我是不清楚

的print_r（$陣列）顯示此：

Array ([0] => Array ([1173627548] => Array ([num] => 1173627548 [methv] => dont know [q1] => - [q2] => - [q3] => U [q4] => - [comm] =>)) [1] => Array ([1182868902] => Array ([num] => 1182868902 [methv] => dont know [q1] => - [q2] => - [q3] => U [q4] => - [comm] =>))) Array ([0] => Array ([1173627548] => Array ([num] => 1173627548 [methv] => dont know [q1] => - [q2] => - [q3] => U [q4] => - [comm] =>)) [1] => Array ([1182868902] => Array ([num] => 1182868902 [methv] => dont know [q1] => - [q2] => - [q3] => U [q4] => - [comm] =>))) 

注：我現在有2個陣列在這個陣列中

Answer 1

我想你想在數組$a上循環，其每個元素也是數組。

當你循環$陣列有一個項目，其信息是你說了一句：

Array ( 
    [1173627548] => Array ( 
    [num] => 1173627548 
    [methv] => dont know 
    [q1] => - 
    [q2] => - 
    [q3] => U 
    [q4] => - 
    [comm] => 
    ) 
) 

如果您要訪問methv元素，你應該做到以下幾點：

foreach($array as $a){ 
    echo $a["methv"]; // this would access $array[ 1173627548 ][ "methv" ] 
} 

雖然foreach繼續你將繼續訪問所有$array[ ][ "methv" ]值 希望它有幫助。

---

基於您的評論表示print_r($array)。

首先，讓我縮進它使我們得到數組的一個更好的概述：

Array ( 
    [0] => Array ( 
    [1173627548] => Array ( 
     [num] => 1173627548 
     [methv] => dont know 
     [q1] => - 
     [q2] => - 
     [q3] => U 
     [q4] => - 
     [comm] => 
     ) 
    ) 
    [1] => Array ( 
    [1182868902] => Array ( 
     [num] => 1182868902 
     [methv] => dont know 
     [q1] => - 
     [q2] => - 
     [q3] => U 
     [q4] => - 
     [comm] =>) 
     ) 
) 
Array (
    [0] => Array (
    [1173627548] => Array ( 
     [num] => 1173627548 
     [methv] => dont know 
     [q1] => - 
     [q2] => - 
     [q3] => U 
     [q4] => - [comm] => 
     ) 
    ) 
    [1] => Array (
    [1182868902] => Array (
     [num] => 1182868902 
     [methv] => dont know 
     [q1] => - 
     [q2] => - 
     [q3] => U 
     [q4] => - 
     [comm] => 
     ) 
    ) 
) 

我猜你是印刷兩次，因爲我們可以看到兩片完全相同陣列一前一後。

如果你想獲得[methv]項目，你需要的是訪問：

$array[ 0 ][ 1173627548 ][ "methv" ] 
$array[ 1 ][ 1182868902 ][ "methv" ] 

所以你可以做的是使用foreach兩次：

foreach ($array as $a) { 
    foreach ($a as $v) { 
     echo $v[ "methv" ]; 
    } 
} 

Answer 2

對於調試，我會建議一些原始但可讀的調試，如下所示：

function trace($a) { print "<pre>".var_export($a, 1)."</pre>"; } 
// then you can do: 
trace($array); 

至於你的問題，你可以像這樣訪問methv鍵：$array[0][1173627548]['methv']（或$array[1173627548]['methv']如果上面的trace是完整的$ array變量）。