php用户登录代码,cookie,数据库
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
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_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]')";
//开源代码phprm.com
$result = mysql_query($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,实例代码如下:
<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>";
}
}
}本文地址：http://www.phprm.com/develop/fs5344.html
转载随意，但请附上文章地址:-)