ช่วยด้วยครับพอดีมีปัญหา php ในระบบไม่คำนวนจุดทศนิยม

<?php 
		$x=0;
		foreach( $Product_name_eng as $key => $val) {
      if($Amount[$key] != 0){
  			echo "<tr>";
  			echo "<td>";
  			echo $Product_name_eng[$key];
  			echo " ( ";
  			echo $Product_name[$key];
  			echo " ) ";
  			echo "</td>";
  			echo "<td>";
  			echo $Size[$key];
  			echo "</td>";
  			echo "<td>";
  			echo number_format($Amount[$key]);
  			echo "</td>";
  			echo "<td>";
  			echo number_format((float)$Price[$key], 2);
  			echo "</td>";
  			echo "<td style='width:50px;'>";
  			//echo number_format((float)$Total[$key], 2);
  			echo $Total[$key]."</td>";
  			echo "</tr>";
      }
			$x++;
		}
	?>

<!--- Calculate Total -->
<?php
	$y=0; $Total_Amount=0; $Total_Total=0;
	foreach( $Product_name_eng as $key => $val){
		$tt = str_replace(',','',$Total[$key]);
		$Total_Amount = $Amount[$key]+$Total_Amount;
		$Total_Total += intval($tt);
		//echo $tt;
		$y++;
	}
	//echo $Total_Total;
?>


<tr>
<td><font size="2px">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ยอดรวมก่อนหักส่วนลด</font></td>
<td></td>
<td><font size="2px"><?php echo "<Strong>".number_format ($Total_Amount)."</strong>"; ?></font> </td>
<td></td>
<td><?php echo "<Strong>".number_format((float)$Total_Total, 2)."</strong>"; ?></td>
</tr>