PHP Array問題 - 無法通過foreach循環使用

Question

謝謝大家，問題已回答！如果有人有興趣，更新的功能如下，所有其他代碼保持不變：

function fetch_questions($page) { 
global $link; 
$proc = mysqli_prepare($link, "SELECT * FROM tquestions_cwh WHERE page = ?"); 
mysqli_stmt_bind_param($proc, "i", $page); 
mysqli_stmt_execute($proc); 


$rowq = array(); 
stmt_bind_assoc($proc, $rowq); 

// loop through all result rows 
// while ($proc->fetch()) { 
    // print_r($rowq); 
//  $rows[]=$rowq; 
// } 

while ($proc->fetch()) 
{ 
    foreach($rowq as $key=>$value) 
    { 
     $row_tmb[ $key ] = $value; 
    } 
    $rows[] = $row_tmb; 
} 

mysqli_stmt_close($proc); 
mysqli_clean_connection($link); 
return($rows); 

}

好吧，

下面是代碼：

function fetch_questions($page) { 
    global $link; 
    $proc = mysqli_prepare($link, "SELECT * FROM tquestions_cwh WHERE page = ?"); 
    mysqli_stmt_bind_param($proc, "i", $page); 
    mysqli_stmt_execute($proc); 


    $rows = array(); 
    stmt_bind_assoc($proc, $rowq); 

    // loop through all result rows 
    while ($proc->fetch()) { 
     // print_r($rowq); 
     $rows[]=$rowq; 
    } 

    mysqli_stmt_close($proc); 
    mysqli_clean_connection($link); 
    return($rows); 
} 

我然後將其添加到php變量，如下所示：

$qs = fetch_questions($page); 

我然後依次通過的，就像這樣：

foreach($qs as $value){ 
       echo "<tr>".$value['qnum']." is the questions number and the question text is ".$value['qtext'].". The page and q values are ".$value['page']." and ".$value['questions']." respectively.</tr>"; 

輸出，但是是這樣的：

8 is the questions number and the question text is I know how what I do fits into my team's objectives. The page and q values are 1 and q8 respectively.8 is the questions number and the question text is I know how what I do fits into my team's objectives. The page and q values are 1 and q8 respectively.8 is the questions number and the question text is I know how what I do fits into my team's objectives. The page and q values are 1 and q8 respectively.8 is the questions number and the question text is I know how what I do fits into my team's objectives. The page and q values are 1 and q8 respectively.8 is the questions number and the question text is I know how what I do fits into my team's objectives. The page and q values are 1 and q8 respectively.8 is the questions number and the question text is I know how what I do fits into my team's objectives. The page and q values are 1 and q8 respectively.8 is the questions number and the question text is I know how what I do fits into my team's objectives. The page and q values are 1 and q8 respectively.8 is the questions number and the question text is I know how what I do fits into my team's objectives. The page and q values are 1 and q8 respectively. 

這不是我想要的東西，以供參考，使用打印功能看起來數組像這樣：

Array 
    (
     [0] => Array 
      (
       [questions] => q8 
       [qnum] => 8 
       [qtext] => I know how what I do fits into my team's objectives 
       [page] => 1 
      ) 

     [1] => Array 
      (
       [questions] => q8 
       [qnum] => 8 
       [qtext] => I know how what I do fits into my team's objectives 
       [page] => 1 
      ) 

     [2] => Array 
      (
       [questions] => q8 
       [qnum] => 8 
       [qtext] => I know how what I do fits into my team's objectives 
       [page] => 1 
      ) 

     [3] => Array 
      (
       [questions] => q8 
       [qnum] => 8 
       [qtext] => I know how what I do fits into my team's objectives 
       [page] => 1 
      ) 

     [4] => Array 
      (
       [questions] => q8 
       [qnum] => 8 
       [qtext] => I know how what I do fits into my team's objectives 
       [page] => 1 
      ) 

     [5] => Array 
      (
       [questions] => q8 
       [qnum] => 8 
       [qtext] => I know how what I do fits into my team's objectives 
       [page] => 1 
      ) 

     [6] => Array 
      (
       [questions] => q8 
       [qnum] => 8 
       [qtext] => I know how what I do fits into my team's objectives 
       [page] => 1 
      ) 

     [7] => Array 
      (
       [questions] => q8 
       [qnum] => 8 
       [qtext] => I know how what I do fits into my team's objectives 
       [page] => 1 
      ) 

    ) 

很明顯，它沒有循環顯示每一行，因爲它應該...任何建議？

荷馬。

Answer 1

我讀了manual，找到這個可以幫助你：

/* 
while ($proc->fetch()) {   
    // print_r($rowq);   
    $rows[]=$rowq;   
} 
*/ 
while ($proc->fetch()) 
{ 
    foreach($rowq as $key=>$value) 
    { 
     $row_tmb[ $key ] = $value; 
    } 
    $row[] = $row_tmb; 
} 

報價：的問題是，返回的$rowq是參考，而不是數據。因此，當您編寫$row[] = $rowq時，$row將填充數據集的最後一個元素。

Answer 2

對不起，我不熟悉mysqli的程序風格，所以我不知道這是否是你的問題。但是，在我看來，你已經將$ proc設置爲mysqli_prepare的結果，但是according to the manual，該函數返回true或false。然後你使用$ proc作爲mysqli_stmt_bind_param（）的第一個參數，但是，according to the manual，這個參數應該是mysqli_stmt_init（）的返回值，我假設它是$ link。事實上，無論你使用$ proc作爲參數，你都應該使用$ link。

Answer 3

不知道是否還有更多，但標記是錯誤的：您錯過了打開和關閉<td>。你發佈的輸出看起來很完整，它只出現在一行中。嘗試：

foreach($qs as $value) { 
    echo "<tr><td>".$value['qnum']." is the questions number and the question text is ".$value['qtext'].". The page and q values are ".$value['page']." and ".$value['questions']." respectively.</td></tr>"; 
} 

Answer 4

mysqli_stmt_fetch手冊說：

注：請注意，所有列必須由應用程序調用mysqli_stmt_fetch之前的約束（）。

也許爲SELECT *查詢，你應該使用mysqli_stmt_store_result和mysqli_stmt_result_metadata函數來獲取所有列。