我需要回显MySQL查询的结果,查询有效。只需完成如何弄清楚如何回应它的结果。
$con = mysql_connect(DB_HOST, DB_USER, DB_PASS);
if (!$con)
{
die('Could not connect: ' . mysql_error());
}
mysql_select_db(DB_NAME, $con);
$result = mysql_query("SELECT SUM($user_nameid) FROM profits");
I KNOW SOMETHING GOES HERE BUT WHAT?! ANY HELP?
mysql_close($con);
提前致谢,非常感谢所有帮助!
答案 0 :(得分:1)
您可以使用mysql_result
$sum = mysql_result($result, 0);
答案 1 :(得分:1)
$con = mysql_connect(DB_HOST, DB_USER, DB_PASS);
if (!$con)
{
die('Could not connect: ' . mysql_error());
}
mysql_select_db(DB_NAME, $con);
$result = mysql_query("SELECT SUM($user_nameid) FROM profits");
$total = reset(mysql_fetch_assoc($result));
//comment this next line if you don't want to output to the browser
echo $total;
mysql_close($con);
答案 2 :(得分:1)
不确定您对查询的看法。 SUM()适用于您查询的表中的特定FIELD。很可能你想要
SELECT count(*) FROM profits WHERE usernamefield='$username_id';
注意变量周围的引号。如果该变量包含非纯数字的任何内容,则必须引用该变量。而且你还必须处理任何SQL注入问题:
$username_id = $_POST['username_id'];
$safe_id = mysql_real_escape_string($username_id);
$result = mysql_query("SELECT count(*) FROM profits WHERE usernamefield='$safe_id'") or die(mysql_error();
$row = mysql_fetch_array($result);
$count = $row[0];
是应该看的样子。