trim() Funktion Warnung

Question

Mögliche Duplizieren geben:
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

Ich bekomme diese Warnung

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

die meine Ausstattungslinie ist. Der vollständige Code funktioniert, um einen Fehler zu senden, wenn Felder leer sind. Dieser Fehler scheint jedoch zu sagen, dass jedes Feld leer ist, aber nur das 'native' Feld ist erforderlich, so dass das zweite Problem ist. Danke für jede Hilfe!

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); 
      } 
     } 
    } 
} 

Answer 1

// 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"; 
    } 
}