Get all cookies and delete in php

// unset cookies 
if (isset($SERVER['HTTPCOOKIE']))
{
	$cookies = explode(';', $SERVER['HTTPCOOKIE']);
	foreach($cookies as $cookie)
	{
		$parts = explode('=', $cookie);
		$name = trim($parts[0]);
		setcookie($name, '', time()-1000);
		setcookie($name, '', time()-1000, '/');
	}
}