ถามพี่คับ ผมงงมาทั้งวันแล้วคับ อยากทราบการเขียน for ของ php ให้อยู่ในเครื่องหมาย ' นะคับ ทำไง

$body = '<table width="595" border="0" cellspacing="0" cellpadding="0" align="center">
  <tr>
    <td width="793"><form id="form1" name="form1" method="post" action="">
        <table width="595" border="0" cellspacing="0" cellpadding="0">
          <tr>
            <th colspan="2" align="center" valign="middle" class="style5" style="font-size: 14px" scope="col">&nbsp;</th>
          </tr>
          <tr>
            <th height="30" colspan="2" align="center" valign="baseline" class="style8" style="font-size: 14px" scope="col">ใบสั่งซื้อสินค้า</th>
          </tr>
          <tr>
            <td colspan="2" align="right" valign="top" class="style5">&nbsp;</td>
          </tr>
          <tr>
            <td width="400" height="30" align="left" valign="baseline" class="style5">&nbsp;&nbsp;<strong>ชื่อ :</strong>&nbsp;&nbsp;&nbsp; '.$cus_name.'&nbsp;'.$cus_surname.'</td>
            <td width="195" height="30" align="left" valign="baseline" class="style5">&nbsp;&nbsp;<strong>เลขที่ :</strong> '.$row[0].' &nbsp;&nbsp;</td>
          </tr>
          <tr>
            <td height="60" align="left" valign="baseline"><span class="style5">&nbsp;&nbsp;<strong>ที่อยู่ : </strong>'.$cus_addressno.' &nbsp;</span><span class="style9">ซอย '.$cus_alley.'  ถนน '.$cus_street.' <br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ตำบล/แขวง '.$cus_district.' อำเภอ/เขต  '.$cus_amphur.' <br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;จังหวัด  '.$cus_province.'  รหัสไปรษณีย์  '.$cus_zipcode.' </span></td>
            <td height="30" align="left" valign="baseline" class="style5">&nbsp;&nbsp;<strong>วันที่ : </strong> '.$date.' <br />
			
&nbsp;&nbsp;<strong>เวลา :</strong>  '.$time.' </td>
          </tr>
          <tr>
            <td height="30" align="left" valign="baseline" class="style5">&nbsp;&nbsp;<strong>เบอร์โทร :</strong>&nbsp;  '.$cus_tel.' &nbsp;&nbsp;<strong>อีเมล์ :&nbsp;</strong>  '.$cus_mobile.' </td>
            <td height="30" align="left" valign="baseline" class="style5">&nbsp;&nbsp;</td>
          </tr>
        </table>
        <table width="595" border="1" cellpadding="0" cellspacing="0">
          <tr>
            <td width="40" height="30" align="center" valign="middle" bgcolor="#FFFFFF" class="style5" style="font-size: 12px; font-weight: bold">ลำดับ</td>
            <td width="230" height="30" align="center" valign="middle" bgcolor="#FFFFFF" class="style5" style="font-size: 12px; font-weight: bold">รายการสินค้า</td>
            <td width="50" align="center" valign="middle" bgcolor="#FFFFFF" class="style5" style="font-size: 12px; font-weight: bold">จำนวน</td>
            <td width="133" align="center" valign="middle" bgcolor="#FFFFFF" class="style5" style="font-size: 12px; font-weight: bold">ราคา / หน่วย </td>
            <td width="130" align="center" valign="middle" bgcolor="#FFFFFF" class="style5" style="font-size: 12px; font-weight: bold">จำนวนเงินรวม</td>
          </tr>
******************************************* ช่วงนี่คับที่มีปัญหา ****************************************************************
	for ($i=0; $i<count($_SESSION['sess_id']); $i++){
                $amount=$_SESSION['sess_num'][$i]*$_SESSION['sess_price'][$i];
        <tr>
            <td height="25" align="center" valign="middle" class="style5">'.$id[$i].'</td>
            <td align="left" valign="middle" class="style5">&nbsp;&nbsp;'.$_SESSION['sess_name1'][$i].''.$_SESSION['sess_name'][$i].'
			</td>
            <td align="center" valign="middle" class="style5">'. $_SESSION['sess_num'][$i].'</td>
            <td align="right" valign="middle" class="style5">'.$_SESSION['sess_price'][$i].'&nbsp;&nbsp;</td>
            <td height="25" align="right" valign="middle" class="style5">'.$amount .'&nbsp;&nbsp;</td>
          </tr>
	}
******************************************* ช่วงนี่คับที่มีปัญหา ****************************************************************
        </table>
        <table width="595" border="0" cellspacing="0" cellpadding="0">
          <tr>
            <td align="right" valign="top"><table width="269" border="0" cellpadding="0" cellspacing="0">
              <tr>
                <td width="133" align="right" valign="middle" class="style5" style="font-weight: bold">จำนวนเงินรวม&nbsp;&nbsp;</td>
                <td width="130" height="25" align="right" valign="middle" class="style5">'. $_SESSION['sub'].'&nbsp;&nbsp;</td>
              </tr>
              <tr>
                <td align="right" valign="middle" class="style5" style="font-weight: bold">ค่าจัดส่ง&nbsp;&nbsp;</td>
                <td height="25" align="right" valign="middle" class="style5">'. $_SESSION['del_pay'].'&nbsp;&nbsp;</td>
              </tr>
              <tr>
                <td align="right" valign="middle" class="style5" style="font-weight: bold">จำนวนเงินทั้งสิ้น&nbsp;&nbsp;</td>
                <td height="25" align="right" valign="middle" class="style5">'. $_SESSION['nettotal'].'&nbsp;&nbsp;</td>
              </tr>
            </table></td>
          </tr>
        </table>
    </form>
    </td>
  </tr>
</table>';