PHP中的cookie不用刷新就生效的方法

function cookie($var, $value='', $time=0, $path='', $domain=''){ 
$_COOKIE[$var] = $value; 
if(is_array($value)){ 
foreach($value as $k=>$v){ 
setcookie($var.'['.$k.']', $v, $time, $path, $domain, $s); 
} 
}else{ 
setcookie($var, $value, $time, $path, $domain, $s); 
} 
} 

//调用方法 

cookie("website","WEB开发笔记","./","www.gxlcms.com"); 
// 
echo $_COOKIE["website"];//