ได้ข้อมูลมาเป็น json แล้วจะวนลูปรวมค่า sum ทุกๆแถวต้องทำไงครับ

$result_report = pg_query("SELECT * FROM usp_report_android_and_ios_by_appname_returnjson ('$app_submit','$year_submit','$month_submit')"); //เลขเด็ด หวยดัง,2014,SEP
while ($data_report = pg_fetch_array($result_report)){
	$datajson= $data_report['datajson'];
	//echo $datajson;
}
$decodejson = json_decode($datajson);

$Datarow = $decodejson->Datarow;
$Status = $decodejson->Status;

if ($Status == TRUE){
$strTable= '<table class="data" border="1" align="center">
<tr class="data">
<th class="data" colspan="2">TimeTimeTime</th>';
for($i=1;$i<=31;$i++){

         $strTable.='<th class="data" colspan = 2 >'.$i.'/'.'09'.'/'.$current_year.'</th>';
}
$strTable.='</tr><tr class="data"><th class="data" colspan= 2></th>';

for($i=1;$i<=31;$i++){
        $strTable.='<td class="data"><font color= orange> Android</font></td>';      
        $strTable.='<td class="data"><font color= #04B4AE>  iOS  </font></td>';
}

$strTable.='</tr>';


foreach ($Datarow as $keys => $values){
        $hour = (string)$values->Hourdescription;
		
        $strTable.='<tr class="data" align="center"><th class="data" colspan = 2 >'.$hour.'</th>';	
		$strTable.='<td class="data">'.(string)$values->Android_d1.'</td>';
		$strTable.='<td class="data">'.(string)$values->iOS_d1.'</td>'; 

		$strTable.='<td class="data">'.(string)$values->Android_d2.'</td>';
		$strTable.='<td class="data">'.(string)$values->iOS_d2.'</td>';	
		$strTable.='<td class="data">'.(string)$values->Android_d3.'</td>';
		$strTable.='<td class="data">'.(string)$values->iOS_d3.'</td>';
		$strTable.='<td class="data">'.(string)$values->Android_d4.'</td>';
		$strTable.='<td class="data">'.(string)$values->iOS_d4.'</td>';
		$strTable.='<td class="data">'.(string)$values->Android_d5.'</td>';
		$strTable.='<td class="data">'.(string)$values->iOS_d5.'</td>';
		$strTable.='<td class="data">'.(string)$values->Android_d6.'</td>';
		$strTable.='<td class="data">'.(string)$values->iOS_d6.'</td>';
		$strTable.='<td class="data">'.(string)$values->Android_d7.'</td>';
		$strTable.='<td class="data">'.(string)$values->iOS_d7.'</td>';
		$strTable.='<td class="data">'.(string)$values->Android_d8.'</td>';
		$strTable.='<td class="data">'.(string)$values->iOS_d8.'</td>';
		$strTable.='<td class="data">'.(string)$values->Android_d9.'</td>';
		$strTable.='<td class="data">'.(string)$values->iOS_d9.'</td>';
		$strTable.='<td class="data">'.(string)$values->Android_d10.'</td>';
		$strTable.='<td class="data">'.(string)$values->iOS_d10.'</td>';
		$strTable.='<td class="data">'.(string)$values->Android_d11.'</td>';
		$strTable.='<td class="data">'.(string)$values->iOS_d11.'</td>';
		$strTable.='<td class="data">'.(string)$values->Android_d12.'</td>';
		$strTable.='<td class="data">'.(string)$values->iOS_d12.'</td>';
		$strTable.='<td class="data">'.(string)$values->Android_d13.'</td>';
		$strTable.='<td class="data">'.(string)$values->iOS_d13.'</td>';
		$strTable.='<td class="data">'.(string)$values->Android_d14.'</td>';
		$strTable.='<td class="data">'.(string)$values->iOS_d14.'</td>';
		$strTable.='<td class="data">'.(string)$values->Android_d15.'</td>';
		$strTable.='<td class="data">'.(string)$values->iOS_d15.'</td>';
		$strTable.='<td class="data">'.(string)$values->Android_d16.'</td>';
		$strTable.='<td class="data">'.(string)$values->iOS_d16.'</td>';
		$strTable.='<td class="data">'.(string)$values->Android_d17.'</td>';
		$strTable.='<td class="data">'.(string)$values->iOS_d17.'</td>';
		$strTable.='<td class="data">'.(string)$values->Android_d18.'</td>';
		$strTable.='<td class="data">'.(string)$values->iOS_d18.'</td>';
		$strTable.='<td class="data">'.(string)$values->Android_d19.'</td>';
		$strTable.='<td class="data">'.(string)$values->iOS_d19.'</td>';
		$strTable.='<td class="data">'.(string)$values->Android_d20.'</td>';
		$strTable.='<td class="data">'.(string)$values->iOS_d20.'</td>';
		$strTable.='<td class="data">'.(string)$values->Android_d21.'</td>';
		$strTable.='<td class="data">'.(string)$values->iOS_d21.'</td>';
		$strTable.='<td class="data">'.(string)$values->Android_d22.'</td>';
		$strTable.='<td class="data">'.(string)$values->iOS_d22.'</td>';
		$strTable.='<td class="data">'.(string)$values->Android_d23.'</td>';
		$strTable.='<td class="data">'.(string)$values->iOS_d23.'</td>';
		$strTable.='<td class="data">'.(string)$values->Android_d24.'</td>';
		$strTable.='<td class="data">'.(string)$values->iOS_d24.'</td>';
		$strTable.='<td class="data">'.(string)$values->Android_d25.'</td>';
		$strTable.='<td class="data">'.(string)$values->iOS_d25.'</td>';
		$strTable.='<td class="data">'.(string)$values->Android_d26.'</td>';
		$strTable.='<td class="data">'.(string)$values->iOS_d26.'</td>';
		$strTable.='<td class="data">'.(string)$values->Android_d27.'</td>';
		$strTable.='<td class="data">'.(string)$values->iOS_d27.'</td>';
		$strTable.='<td class="data">'.(string)$values->Android_d28.'</td>';
		$strTable.='<td class="data">'.(string)$values->iOS_d28.'</td>';
		$strTable.='<td class="data">'.(string)$values->Android_d29.'</td>';
		$strTable.='<td class="data">'.(string)$values->iOS_d29.'</td>';
		$strTable.='<td class="data">'.(string)$values->Android_d30.'</td>';
		$strTable.='<td class="data">'.(string)$values->iOS_d30.'</td>';
		$strTable.='<td class="data">'.(string)$values->Android_d31.'</td>';
		$strTable.='<td class="data">'.(string)$values->iOS_d31.'</td>'.'</tr>';	
}  
echo $strTable;      
}
else{
	echo 'status false';	
}
?>