TRIM（）函數給予警告

可能重複：
mysql_fetch_array() expects parameter 1 to be resource, boolean given in select
Warning: mysql_fetch_* expects parameter 1 to be resource, boolean given error TRIM（）函數給予警告

我得到這個警告

Warning: trim() expects parameter 1 to be string, array given in ..

這是我的裝飾線。完整的代碼用於在字段爲空時發送錯誤。然而，這個錯誤似乎是說每個字段都是空的，但只有'本地'字段是必需的，這是我的第二個問題。感謝您的幫助！

session_start(); 
$err = array(); 


$user_id = intval($_SESSION['user_id']); 
// otherwise 
if (isset($_POST['doLanguage'])) { 
$link = mysql_connect(DB_HOST, DB_USER, DB_PASS) or die("Couldn't make connection."); 

// check if current user is banned 
$the_query = sprintf("SELECT COUNT(*) FROM users WHERE `banned` = '0' AND `id` = 
'%d'", $user_id); 
$result = mysql_query($the_query, $link); 
$user_check = mysql_num_rows($result); 
// user is ok 
if ($user_check > 0) { 

    // check for empty fields 
    foreach ($_POST as $key => $val) { 
     $value = trim($val); 
     if (empty($value)) { 
      $err[] = "ERROR - $key is required"; 
     } 
    } 
    // no errors 
    if(empty($err)) { 
     for($i = 0; $i < count($_POST["other"]); $i++) 


      $native = mysql_real_escape_string($_POST['native'][$i]); 
      $other = mysql_real_escape_string($_POST['other'][$i]); 
      $other_list = mysql_real_escape_string($_POST['other_list'][$i]); 
      $other_read = mysql_real_escape_string($_POST['other_read'][$i]); 
      $other_spokint = mysql_real_escape_string($_POST['other_spokint'][$i]); 
      $other_spokprod = mysql_real_escape_string($_POST['other_spokprod'][$i]); 
      $other_writ = mysql_real_escape_string($_POST['other_writ'][$i]); 

     // insert into the database 
     $the_query = sprintf("INSERT INTO `language` 
(`user_id`,`native`,`other`,`other_list`,`other_read`, `other_spokint` 
,`other_spokprod`,`other_writ`) VALUES ('%d','%s','%s','%s','%s','%s','%s','%s')", 
    $user_id,$native,$other,$other_list,$other_read, 
$other_spokint,$other_spokprod,$other_writ); 

     // query is ok? 
     if (mysql_query($the_query, $link)){ 

      // redirect to user profile 
      header('Location: myaccount.php?id=' . $user_id); 
      } 
     } 
    } 
}

來源

2012-04-14 user1257518

井用'的var_dump（$ _ POST）;'以查看哪些數據是類型的陣列。 – brezanac 2012-04-14 17:25:23

結果是array [8] {[「native」] => array（1）{[0] => string（0）「」} [「other」] => array（1）{[0] => string（0）「」} [「other_list」] => array（1）{[0] => string（0）「」} [「other_read」] => array（1）{[0] => string（ 0）「」} [「other_spokint」] => array（1）{[0] => string（0）「」} [「other_spokprod」] => array（1）{[0] => string（0）「」} [「other_writ」] => array（1）{[0] => string（0）「」} [「doLanguage」] => string（4）「Save」}' – user1257518 2012-04-14 17:30:02

a ha！謝謝，現在很清楚 – 2012-04-14 17:41:19

// check for empty fields 
foreach ($_POST as $key => $val) { 
    while (is_array($val)) 
     $val = reset($val); 
    if (is_string($val)) 
     $val = trim($val); 
    if (empty($val)) { 
     $err[] = "ERROR - $key is required"; 
    } 
}

來源

2012-04-14 17:24:37

沒有錯誤消息出現 – user1257518 2012-04-14 17:28:26

添加一些調試語句，輸出密鑰和值，並確保它循環遍歷所有發佈的值。 – 2012-04-14 17:30:18

我不知道該怎麼辦我還在學習 – user1257518 2012-04-14 17:38:17

TRIM（）函數給予警告

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