林完全被這個錯誤confised?我在PHP新MySQL的民行幫助問題
代碼:
<?php
$username = $_POST['username'];
$password = $_POST['password'];
if ($username&&$password)
{
$connect = mysql_connect("localhost", "root", "") or die("Could'nt Connect");
$query = mysql_query("SELECT * FROM users WHERE username='$username'");
mysql_select_db("shit") or die("cant find db");
$numrows = mysql_num_rows($query);
echo $numrows;
} else
die("please enter username and a password");
?>
酷,你在選擇前查詢數據庫。 –
@u_mulder來自phpmyadmin的圖片? –
在'$ query'之前移動'mysql_select_db'。你也開放SQL注入。 – chris85