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simple PHP login without a database #php #form
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<?php | |
session_start(); | |
// ***************************************** // | |
// ********** DECLARE VARIABLES ********** // | |
// ***************************************** // | |
$username = 'username'; | |
$password = 'password'; | |
$random1 = 'secret_key1'; | |
$random2 = 'secret_key2'; | |
$hash = md5($random1.$pass.$random2); | |
$self = $_SERVER['REQUEST_URI']; | |
// ************************************ // | |
// ********** USER LOGOUT ********** // | |
// ************************************ // | |
if(isset($_GET['logout'])) { | |
unset($_SESSION['login']); | |
} | |
// ******************************************* // | |
// ********** USER IS LOGGED IN ********** // | |
// ******************************************* // | |
if (isset($_SESSION['login']) && $_SESSION['login'] == $hash) { | |
?> | |
<p>Hello <?php echo $username; ?>, you have successfully logged in!</p> | |
<a href="?logout=true">Logout?</a> | |
<?php | |
} | |
// *********************************************** // | |
// ********** FORM HAS BEEN SUBMITTED ********** // | |
// *********************************************** // | |
else if (isset($_POST['submit'])) { | |
if ($_POST['username'] == $username && $_POST['password'] == $password){ | |
//IF USERNAME AND PASSWORD ARE CORRECT SET THE LOG-IN SESSION | |
$_SESSION["login"] = $hash; | |
header("Location: $_SERVER[PHP_SELF]"); | |
} else { | |
// DISPLAY FORM WITH ERROR | |
display_login_form(); | |
echo '<p>Username or password is invalid</p>'; | |
} | |
} | |
// *********************************************** // | |
// ********** SHOW THE LOG-IN FORM ********** // | |
// *********************************************** // | |
else { | |
display_login_form(); | |
} | |
function display_login_form() { ?> | |
<form action="<?php echo $self; ?>" method='post'> | |
<label for="username">username</label> | |
<input type="text" name="username" id="username"> | |
<label for="password">password</label> | |
<input type="password" name="password" id="password"> | |
<input type="submit" name="submit" value="submit"> | |
</form> | |
<?php } ?> |
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