<分区>
我正在尝试根据用户输入(用户名)获取字段值(SecurityQues)。
代码如下:
$substr=substr($usrnm,0,2);
if($substr=="AC")
{
$res="SELECT SecurityQues FROM reg_ac WHERE UserName=$usrnm";
}
else
{
$res="SELECT SecurityQues FROM reg_indi WHERE UserName=$usrnm";
}
$result = mysql_query($res,$db_handle);
$result = mysql_query($res);
while($row = mysql_fetch_assoc($result))
{
echo $row['SecurityQues'];
}
但我收到以下警告:
Warning: mysql_fetch_assoc() expects parameter 1 to be resource, boolean given in C:\xampp\htdocs\my on line 120