PHP添加行時出錯

Question

我想在所有行中添加金額。這裏是代碼。請幫助我。

$tot1=mysql_query("select SUM(Amount) from wp_product_details"); 
while($row1 = mysql_fetch_array($tot1)) 
{ 
echo $row1['Amount']; 
} 

Answer 1

更改查詢一點點使用量與$row1[]

$tot1=mysql_query("select SUM(Amount) as Amount from wp_product_details"); 

或更改$row1[]語法

while($row1 = mysql_fetch_array($tot1)) 
{ 
echo $row1['SUM(Amount)']; 
} 

Answer 2

試試這個代碼

$tot1=mysql_query("select SUM(Amount) as amount from wp_product_details"); 
    while($row1 = mysql_fetch_array($tot1)) 
    { 
    echo $row1['amount']; 
    }