โค๊ด error ดูให้หน่อยนะค่ะ...$strSQL = "update student set class = $class1 where class = ป.1";

<?php
$strSQL = "update student set class = '$class1' where class = 'ป.1'";
?>

<?php
$strSQL = "update student set class='$class1' where class = 'ป.1'";
?>

<?php
if ($mdate == "21 พ.ค." ) 
{
		$class = $Year - 2551 ;
		if ($class =="1")
	                            { $class1 = "ป.1";	
                                                $objDB = mysql_select_db("rigister");
			$strSQL = "update student set class = '$class1' where class = 'ป.1'";
			$objQuery = mysql_query($strSQL) or die ("Error Query ".$strSQL."]");
                                             }			
		else if ($class =="2")
		            {  $class1= "ป.2";
			$objDB = mysql_select_db("rigister");
			$strSQL = "update student set class = '$class1' where class = 'ป.1'";
			$objQuery = mysql_query($strSQL) or die ("Error Query [".$strSQL."]");
		            }
}

?>