ช่วยดูโค้ด if else between ให้ผมด้วยครับ มันเออเร่อ

		<? include('config.php');
		$id =$_GET['exam_id'];
			
           $sql = "select * from exam_set as e , courses as c where id='$id'";
		   //$sql = "select * from exam_object as eo , exam_subject as es group by eo_id and es_id";
	  $result = mysql_query($sql) or die (mysql_error());
	  $row = mysql_fetch_array($result)
?>

<?	  
$dates=date("Y-m-d");
$times=date("H:i:s"); 
echo "$dates | $times | "; 
	  if($dates!=$row['dates'] )
	  {
echo "<script>";
echo "alert('ไม่สามารถเข้าสอบได้ ');";
echo "window.location='start-exam.php';";
echo "</script>";
	  }
	  else if($dates==$row['dates'] and $times between $row['stime'] and $row['etime'])
	  {
echo "<script>";
echo "alert('เริ่มทำข้อสอบ');";
echo "</script>";
	  } 
	  ?>