php简单登录页面，适合入门，不多说，上代码：
<?php
//开启session验证
session_start();
if (isset($_POST["submit"])) {
if ($_POST["user"] == "php5" && $_POST["pass"] ==
"iscool") {
$_SESSION["username"] = $_POST["user"];
}
}
?>
<html>
<head>
<title>用户登录验证-www.jb200.com</title>
</head>
<body>
<?php
if (isset($_SESSION["username"])) {
echo("You are logged in!");
} else {
?>
<form method="post">
<input type="text" name="user" /><br />
<input type="password" name="pass" /><br />
<input type="submit" name="submit" value="Login" />
</form>
<?php
}
?>
</body>
</html>