我正试图在我的网页上展示注册用户总数。 我正在利用这一点:
<?php
//connect to db
require_once( connect.php );
$usrcnt = mysql_query("SELECT COUNT(DISTINCT ID) FROM members");
$res = mysql_num_rows($usrcnt);
$cnt_mbrs = mysql_fetch_array($res);
?>
我在我的网页上打上$cnt_mbrs,但我有以下错误:
mysql_num_rows(): supplied argument is not a valid MySQL result resource...
Is it correct what I am doing?
$usrcnt = mysql_query("SELECT COUNT(*) as cnt FROM members");
$res = mysql_fetch_array($usrcnt);
$cnt_mbrs = $res [ cnt ]
更正确。
mysql_num_rows> 回到了所设定的行文数目。 变革
$cnt_mbrs = mysql_fetch_array($usercnt);
或许为了业绩考虑,最好保持一个整体。
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