Php Code: Set / Unset / Load Cookies

Cookie is a common way to store data on users PC. Such data used, for example, to know whether the user is logged in before or not.
In this script we have made very simple login system to show how the cookies are used. You can find how to set, load or delete a cookie in this code. Enjoy!

<!-- This Script is from www.phpfreecpde.com, Coded by: Kerixa Inc-->

<?php
function welcome($msg){
$username='Admin';
die('
<table style="border-width: 0px;width: 400px; height: 107px">
	<tr>
		<td style="border-style: solid;border-width: 0px;font-size: 17pt;background-color: #DFDFFF;">'.$msg.'</td></tr><tr>
		<td style="border-style: solid;border-width: 0px;font-size: 17pt;background-color: #DFDFFF;"><strong>Welcome '.$username.'</strong><br>
		<a href="'.$_SERVER['PHP_SELF'].'?type=logout"><span style="border-style: solid;border-width: 0px;background-color: #DFDFFF;">Logout</span></a></td>
	</tr>
</table>
');
}
$login='no';
if (isset($_COOKIE['username'])) $login='yes';

if (isset($_GET['type']) && $_GET['type']=='login'){
	if ($_GET['username']='Admin' && $_GET['password']='12345')
		setcookie('login','true',time()+3600);
		$login='yes';
}elseif (isset($_GET['type']) && $_GET['type']=='logout'){
		setcookie('login','',time()-3600);
		$login='no';
}

if ( $login=='yes')	
	welcome ('You are successfully logged in!');
else{
?>

<table style="border-width: 0px;width: 212px; height: 179px" align="center" cellpadding="0" cellspacing="0">
<tr>
		<td style="border-style: solid;border-width: 0px;background-color: #DFDFFF;">
		<form action="<?php echo $_SERVER['PHP_SELF'].'?type=login'?>" method="post" ><h1>Login</h1>
<table style='border:0px solid #000000;'>
<tr>
<td align='right'>
Username: 
<input type='text' size='15' maxlength='25' name='username' value="Admin">
</td>
</tr>
<tr>
<td align='right'>
Password: 
<input type='password' size='15' maxlength='25' name='password' value="12345">
</td>
</tr>
<tr>
<td align='center'>
<input type="submit" value="Login">
</td>
</tr>
</table>
		</form>
		</td>
	</tr>
</table>

<?php
}
?>

<br><font face="Tahoma"><a target="_blank" href="http://www.phpfreecode.com/"><span style="font-size: 8pt; text-decoration: none">PHP Free Code</span></a></font>

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