好的......所以,我已经把所有内容写得正确了......但是,当试图获得SQL行“Total”的总计时,它不再给我一个错误......它只是返回空白
CODE :
$query2 = "SELECT SUM(Total) AS Total_Owed FROM public debts";
$sum = mysql_query($query2);
echo "<tr><td align=\"left\" colspan=\"2\">$" . $row['Total_Owed'] . "</td><td> </td></tr>";
当它运行时,它只显示:$
,仅此而已。有什么建议吗?
答案 0 :(得分:3)
执行mysql_query后,您还需要获取该行,因此请更改您的代码以包含此
$row = mysql_fetch_row($sum);
答案 1 :(得分:0)
您必须先检索查询结果:
<?php
$query2 = "SELECT SUM(Total) AS Total_Owed FROM public debts";
$objResults = mysql_query($query2);
$arrRow = mysql_fetch_assoc($objResults)
echo "<tr><td align=\"left\" colspan=\"2\">$" . $arrRow['Total_Owed'] . "</td><td> </td></tr>";