สอบถามเรื่อง การสร้างตัวแปรเก็บค่าผลรวบัญชีแยกประเภทของแต่ล่ะแถว ครับ

$sel_countbank_sql = "select * from tblbank";
$sel_countbank_query = mysql_query($sel_countbank_sql);
$C = 1;
while($CR = mysql_fetch_array($sel_countbank_query))
{
	$sum_CR[] = 0;	
	$C++;
	echo "$sum_CR[$C]".$sum_CR[$C];
}

$sel_countbank_sql = "select * from tblbank";
$sel_countbank_query = mysql_query($sel_countbank_sql);
$C = 0; $sum_CR = array();
while($CR = mysql_fetch_array($sel_countbank_query))
{
	$sum_CR[] = 0;
	echo $sum_CR[$C]; $C++;
}

<?php
		$sum_CR_Total = 0;
		for($i=0;$i<count($sum_CR);$i++)
		{
			 $sum_CR_Total += $sum_CR[$i];
		}
		echo $sum_CR_Total;
		 ?>