Why i get everytime the error-message that i've already sent the headers
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by mikep
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Published on 2010-05-10T16:57:27Z
Indexed on
2010/05/10
17:04 UTC
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Hey,
i've another question about web-programming.
I programmed a login script, but everytime when i try to login it says that i've send the header informations already.
Here are the 2 files:
<?php
if($_GET['logout'] == 1) {
setcookie('authorized', 1, time()-3600);
}
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Login - photoAdminSite</title>
</head>
<style type="text/css">
body {
text-align: center;
font-family: helvetica;
}
#loginForm {
padding: 1em;
background: #e3e3e3;
width: 260px;
margin: 3em auto 0;
text-align: left;
}
</style>
<body>
<div id="loginForm">
<form method="post" action="confirm_login_credentials.php">
<h2>LOGIN</h2>
<p>Username: <input type="text" name="username" /></p>
<p>Password: <input type="password" name="password" /></p>
<p><input type="submit" value="Login" name="submit" /></p>
</form>
</div>
</body>
</html>
<?php
$username = $_POST['username'];
$password = $_POST['password'];
require 'database.php';
$q = "SELECT id FROM users_photoadminsite WHERE user_name = '$username' AND password = '$password'";
$result = $mysqli->query($q) or die(mysqli_error());
if (mysqli_num_rows($result) == 1) {
setcookie('authorized', 1, 0);
header("Location: index.php");
} else {
header("Location: login.php");
}
?>
i would be really happy about some helpful answers.
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