重定向到頁面，如果數據丟失

Question

行，所以我今天已經工作的時間太長了，我停留在一些簡單的（我認爲）

function commonData($uid) 
{ 
    if ($uid) 
    { 
      $sql = " 
        SELECT a.user_id, a.email, a.username, a.displayname, a.level_id, a.photo_id 
        FROM engine4_users AS a 
        WHERE a.user_id = ".$uid; 
    } 

    $UserInfo = @mysql_fetch_assoc(mysql_query($sql)); 

    if ($UserInfo[user_id]) 
    { 

      if ($UserInfo[photo_id] && $UserInfo[photo_id]!="NULL") 
      { 
        $PPhoto = @mysql_fetch_assoc(mysql_query("SELECT a.* FROM engine4_storage_files AS a WHERE a.file_id = ".$UserInfo[photo_id])); 
        $photo = SITE.$PPhoto[storage_path]; 
      } 
      else $photo = NO_PHOTO; 

    $queryMoreProfile = mysql_query("SELECT * FROM engine4_user_fields_values AS a WHERE a.item_id = ".$UserInfo[user_id]); 

    while ($moreProfile = @mysql_fetch_assoc($queryMoreProfile)) 
    { 

      //$location = ''; 
      if ($moreProfile['field_id']==24) 
      { 
        $locationNumber = $moreProfile['value']; 
        $locationsql = @mysql_fetch_assoc(mysql_query("SELECT a.* FROM engine4_user_fields_options AS a WHERE a.option_id = ".$locationNumber)); 

        if (isset($locationsql['label']) && !empty($locationsql['label'])) 
        { 
          $location = $locationsql['label']; 
        } 
      } 

      //if(empty($location)) 
      //{ 
      //  header("Location: http://www.fetishmen.net/members/edit/profile"); 
      //  exit; 
      //} 
} 

我所試圖做的是說，如果$location有沒有值（完全丟失數據庫）重定向到頁面。我在這裏做錯了什麼？

Answer 1

陣列$moreProfile和$locationsql需要作一個變量或一個字符串的索引，

if ($moreProfile['field_id']==24) //or $field_id 
{ 
    $locationNumber = $moreProfile['value']; //or $value 
    $locationsql = @mysql_fetch_assoc(mysql_query("SELECT a.* FROM engine4_user_fields_options AS a WHERE a.option_id = ".$locationNumber)); 
    $location = $locationsql['label']; //or $label 
} 

if(empty($location)) 
{ 
    header("Location: http://website.com"); 
    exit; 
} 

編輯：每個操作的評論作爲，

if ($moreProfile['field_id'] == 24) 
{ 
    $locationNumber = $moreProfile['value']; //or $value 
    $locationsql = @mysql_fetch_assoc(mysql_query("SELECT a.* FROM engine4_user_fields_options AS a WHERE a.option_id = ".$locationNumber)); 
    $location = $locationsql['label']; //or $label 
} else if(empty($moreProfile['field_id'])) { 
    header("Location: http://website.com"); 
    exit; 
} 

Answer 2

應停止使用@並且適當地檢查mysql_result和mysql_fetch_assoc是否返回了某些內容。試試這個，看看它是否重定向你：

$location = ''; 

if ($moreProfile['field_id']==24) 
{ 
    $locationNumber = $moreProfile['value']; 
    $locationsql = @mysql_fetch_assoc(mysql_query("SELECT a.* FROM engine4_user_fields_options AS a WHERE a.option_id = ".$locationNumber)); 

    if (isset($locationsql['label']) && !empty($locationsql['label'])) { 
      $location = $locationsql['label']; 
    } 
} 

if(empty($location)) 
{ 
    header("Location: http://website.com"); 
    exit; 
}