Проблема с отправкой данных в базу. Где может быть ошибка?

if (isset($_POST['submit']))
{
	$title = $_POST['title'];
	$m_desc = $_POST['m_desc'];
	$desc = $_POST['desc'];
	
	$query = "INSERT INTO news (title, m_desc, desc)
				VALUES('{$title}', '{$m_desc}', '{$desc}')";
	$result = mysql_query($query);
}

<form method="post" action="core/modules/newsadd/action.php">
<table>
<tr>
	<td><input type="text" name="title" placeholder="| Заголовок новости" style="margin: 0px; width: 402px;" required/ ></td>
</tr>
<tr>
	<td><input type="text" name="m_desc" placeholder="| Малое описание" style="margin: 0px; width: 402px;" required/></td>
</tr>
<tr>
	<td><input type="text" name="desc" cols="40" rows="3" style="margin: 0px; width: 402px; height: 113px;" placeholder="| Содержимое" required/></td>
</tr>
<tr>
	<center><td><input type="submit" name="submit" value="Отправить" /></td></center>
</tr>

</table>
</form>