Błąd w zapytaniu do bazy Opcje

[slawekxx]

Witam,

Mam taki skrypt do sortowania tabeli

[PHP] pobierz, plaintext 
      <?php
 
$per_page = 9; 
 
if($_GET)
{
$page=$_GET['page'];
}		
 
			switch($_GET['c']) {
				case "1":
					$col = "person_name";//
					break;
				case "2":
					$col = "person_surname";//
					break;
				case "3":
					$col = "person_birthdate";//
					break;
				case "4":
					$col = "person_department";//
					break;
				default:
					$col = "person_id";//
			}
 
			if($_GET['d'] == "1") {
				$dir = "DESC";
			}
			else {
				$dir = "ASC";
			}
 
			if(!$link = mysql_connect("", "", "")) {
				echo "Cannot connect to db server";
			}
			elseif(!mysql_select_db("")) {
				echo "Cannot select database";
			}
			else {
			$start = ($page-1)*$per_page;
				if(!$rs = mysql_query("SELECT * FROM my_table ORDER BY person_id  ")) {
					echo "Cannot parse query";
				}
				elseif(mysql_num_rows($rs) == 0) {
					echo "Brak danych";
				}
				else {
					echo "<table id=\"sortedtable\" class=\"bordered\" cellspacing=\"0\">\n";
					echo "<thead>\n<tr>";
					echo "<th class='ajax'>Record ID</th>";
					echo "<th class='ajax'><font>First Name</font></th>";
					echo "<th class='ajax'>Last Name</th>";
					echo "<th class='ajax'>Birthday</th>";
					echo "<th class='ajax'>Department</th>";
					echo "</tr>\n</thead>\n";
					while($row = mysql_fetch_array($rs)) {
						echo "<tr class='edit_tr'><td>$row[person_id]</td><td>$row[person_name]</td><td>$row[person_surname]</td>
						<td class='label'>$row[person_birthdate]</td><td>$row[person_department]</td></tr>\n";
					}
					echo "</table><br />\n";
				}
			}
        ?>
[PHP] pobierz, plaintext 

chce zrobić do niego paginacje ale wyskakuje mi błąd jeżeli dopiszę do zapytania dwie zmienne limit $start,$per_page

czyli błąd jest w tak napisanym zapytaniu

[PHP] pobierz, plaintext 
 
if(!$rs = mysql_query("SELECT * FROM my_table ORDER BY person_id limit $start,$per_page  "))
[PHP] pobierz, plaintext