導致內容頁面內容消失的代碼

下面的代碼導致我正在處理的頁面返回空白頁面。頁面上還有其他代碼可以返回內容，如果我註釋掉下面的代碼，就會出現這樣的代碼。下面的代碼中是否有錯誤？導致內容頁面內容消失的代碼

由於提前，

約翰

$querysub = mysql_query("SELECT subcheck FROM submission WHERE submissionid = $submissionid"); 
$result = mysql_query($querysub); 
if (!$result) { 
    die 'Could not run query: ' . mysql_error(); 
} 
else{ 
$subcheck = mysql_result($result, 0); 
} 

if($uid = $submittor) 
{ 

if($subcheck = 1) 
{ 

echo '<div class="commentnotify">You submitted item story and you have chosen to receive emails when someone comments on it.<a href="http://www...com/.../comments/commentnotifystop.php?submission='.urlencode($row["title"]).'&submissionid='.$row["submissionid"].'&url='.$row["url"].'&countcomments='.strtoupper($row["countComments"]).'&submittor='.$row["username"].'&submissiondate='.$row["datesubmitted"].'&dispurl='.$row["displayurl"].'">Click here to stop.</a></div>'; 


} else { 
    echo '<div class="commentnotify">You submitted this item and you have chosen not to receive emails when someone comments on it.<a href="http://www...com/.../comments/commentnotifystart.php?submission='.urlencode($row["title"]).'&submissionid='.$row["submissionid"].'&url='.$row["url"].'&countcomments='.strtoupper($row["countComments"]).'&submittor='.$row["username"].'&submissiondate='.$row["datesubmitted"].'&dispurl='.$row["displayurl"].'">Click here to start.</a></div>'; 


} else { 

}

來源

2010-09-17 John

您指定賦值運算符=在if情況下，需要comparison operator（==）代替：

if($uid = $submittor)

應該是：

if($uid == $submittor)

而且

if($subcheck == 1)

你還缺少這行後閉架}：

echo '<div class="commentnotify">You submitted this item and you have chosen not to receive emails when someone comments on it.<a href="http://www...com/.../comments/commentnotifystart.php?submission='.urlencode($row["title"]).'&submissionid='.$row["submissionid"].'&url='.$row["url"].'&countcomments='.strtoupper($row["countComments"]).'&submittor='.$row["username"].'&submissiondate='.$row["datesubmitted"].'&dispurl='.$row["displayurl"].'">Click here to start.</a></div>';

來源

2010-09-17 20:37:21 Sarfraz

你不能有兩個else塊。但我想這只是在這種情況下，嵌套了一個問題：

if($uid = $submittor) 
{ 
    if($subcheck = 1) 
    { 
     echo '<div class="commentnotify">You submitted item story and you have chosen to receive emails when someone comments on it.<a href="http://www...com/.../comments/commentnotifystop.php?submission='.urlencode($row["title"]).'&submissionid='.$row["submissionid"].'&url='.$row["url"].'&countcomments='.strtoupper($row["countComments"]).'&submittor='.$row["username"].'&submissiondate='.$row["datesubmitted"].'&dispurl='.$row["displayurl"].'">Click here to stop.</a></div>'; 
    } else { 
     echo '<div class="commentnotify">You submitted this item and you have chosen not to receive emails when someone comments on it.<a href="http://www...com/.../comments/commentnotifystart.php?submission='.urlencode($row["title"]).'&submissionid='.$row["submissionid"].'&url='.$row["url"].'&countcomments='.strtoupper($row["countComments"]).'&submittor='.$row["username"].'&submissiondate='.$row["datesubmitted"].'&dispurl='.$row["displayurl"].'">Click here to start.</a></div>'; 

    } // <-- added this one 
} else { 

}

順便說一句：您正在使用assignment operator=，而不是像comparison operator==。並且賦值運算符產生分配的值。所以表達式$uid = $submittor返回值$submittor和$subcheck = 1返回1。

來源

2010-09-17 20:38:10 Gumbo

它缺少if（$ uid = $ submittor）{...}的最後一個括號。然後你得到一個錯誤，但你的服務器似乎無法顯示它們，顯示一個空白頁面。

來源

2010-09-17 20:45:06 pedrorezende

導致內容頁面內容消失的代碼

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