下面我们要讲到二种用户登录方法一种是利用window验证加数据库教程密码验证实现登录，后者是利用cookie记录用户信息进行登录，有需要的朋友可以试下。
<?php教程
function authenticate_user() {
header('WWW-Authenticate: Basic realm="Secret Stash"');
header("HTTP/1.0 401 Unauthorized");
exit;
}if (! isset($_SERVER['PHP_AUTH_USER'])) {
authenticate_user();
} else {
mysql教程_pconnect("localhost","authenticator","secret") or die("Can't connect to database server!");
mysql_select_db("java2s") or die("Can't select authentication database!");$query = "SELECT username, ps教程wd FROM user WHERE username='$_SERVER[PHP_AUTH_USER]' AND pswd=MD5('$_SERVER[PHP_AUTH_PW]')";
$result = mysql_query($query);
// If nothing was found, reprompt the user for the login www.111cn.net information.
if (mysql_num_rows($result) == 0) {
authenticate_user();
}
}
?>
利用cookie登录方法
<html>
<head>
<title>Enter Password</title>
</head>
<body>
<form name="forml" method="POST" action="CookieBasedPasswordLogin.php">
<table>
<tr>
<td colspan="2" >
<div align="center"><b>Please Specify the Password</b></div>
</td>
</tr>
<tr>>
<td>
<div align="right">Customer ID</div>
</td>
<td>
<input type="text" name="username">
</td>
</tr>
<tr>
<td>
<div align="right">Password</div>
</td>
<td>
<input type="password" name="password">
</td>
</tr>
<tr>
<td colspan="2">
<center>
<input type="submit" name="Submit" value="Login">
</center>
</td>
</tr>
</table>
</form>
</body>
</html>
<!-- CookieBasedPasswordLogin.php
<?php
$now = getdate();
$storetime= $now["weekday"] . " " . $now["month"] ." " . $now["year"] ;
$storetime.=" Time : ";if ($now["hours"] < 10) {
$storetime.= "0" . $now["hours"];
} else {
$storetime.= $now["hours"];
}
$storetime.= ":";
if ($now["minutes"]<10) {
$storetime.= "0" . $now["minutes"];
} else {
$storetime.= $now["minutes"];
}
$storetime.= ": ";
if ($now["seconds"] <10) {
$storetime.= "0" . $now["seconds"];
} else {
$storetime.= $now["seconds"];
}
if (isset($data)) {
$counter=++$data[l];
setcookie("data[0]",$storetime,time() + (60*60*24));
setcookie("data[l]", $counter,time() + (60*60*24)); setcookie("data[2]",$username,time() + (60*60*24));
echo "<b><center>Hi " . $data[2] . " ! !</center></b><br>n";
echo "<b><center>Last Login Time :" .$data[0] . "</center></b><br>n";
echo "<b><center>Current Date :" .$storetime. "</center></b><br>n";
echo "<b><center>Page View Count :" . $data[l]. "</center></b><br>n";
echo "<b><center>You have successfully logged in!</center></b>";
echo ("<b><contor>You can access this area without entering a password for the next 24 hours!</center></b>");
} else {
if (isset($username) && isset($password)) {
if ($password=="superpass") {
$counter=0;
setcookie("data[0]",$storetime,time() + (60*60*24));
setcookie("data[l]",$counter,time() + (60*60*24));
setcookie("data[2]",$username,time() + (60*60*24));
$url="Location: cookieimp.php";
header($url);
}else{
echo "<hl><center>INVALID PASSWORD!!!</center></hl>";
}
}
}
?>