มันขึ้นแบบนี้นะใน mpdf ครับ Fatal error: Allowed memory size of 25165824 bytes exhausted (tried to allocate 98304 bytes) มีโค๊ตครับ

<?php
require ('report.php');
require_once('C:\AppServ\www\project\mpdf.php');
ob_start();
?>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8">

<style type="text/css">
<!--
@page rotated { size: landscape; }
.style1 {
	font-family: "TH SarabunPSK";
	font-size: 18pt;
	font-weight: bold;
}
.style2 {
	font-family: "TH SarabunPSK";
	font-size: 16pt;
	font-weight: bold;
}
.style3 {
	font-family: "TH SarabunPSK";
	font-size: 16pt;
	
}
.style5 {cursor: hand; font-weight: normal; color: #000000;}
.style9 {font-family: Tahoma; font-size: 12px; }
.style11 {font-size: 12px}
.style13 {font-size: 9}
.style16 {font-size: 9; font-weight: bold; }
.style17 {font-size: 12px; font-weight: bold; }
-->
</style>
<?php require_once('Connections/project.php'); ?>
<?php
if (!function_exists("GetSQLValueString")) {
function GetSQLValueString($theValue, $theType, $theDefinedValue = "", $theNotDefinedValue = "") 
{
  if (PHP_VERSION < 6) {
    $theValue = get_magic_quotes_gpc() ? stripslashes($theValue) : $theValue;
  }

  $theValue = function_exists("mysql_real_escape_string") ? mysql_real_escape_string($theValue) : mysql_escape_string($theValue);

  switch ($theType) {
    case "text":
      $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
      break;    
    case "long":
    case "int":
      $theValue = ($theValue != "") ? intval($theValue) : "NULL";
      break;
    case "double":
      $theValue = ($theValue != "") ? doubleval($theValue) : "NULL";
      break;
    case "date":
      $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
      break;
    case "defined":
      $theValue = ($theValue != "") ? $theDefinedValue : $theNotDefinedValue;
      break;
  }
  return $theValue;
}
}
session_start();
	if($_SESSION['UserID'] == "")
	{
		echo "Please Login!";
		exit();
	}
	
    mysql_connect("localhost","root","root");
	mysql_select_db("project");
	$strSQL = "SELECT * FROM member,userpra,scorep WHERE UserID = '".$_SESSION['UserID']."' ";
	$objQuery = mysql_query($strSQL);
	$objResult = mysql_fetch_array($objQuery);

?>
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.
.
.
<?Php
$html = ob_get_contents();
ob_end_clean();
$pdf = new mPDF('th', 'A4-L', '0', 'THSaraban');
$pdf->SetAutoFont();
$pdf->SetDisplayMode('fullpage');
$pdf->WriteHTML($html, 6);
$pdf->Output();
?>