PHP COOKIE takes effect immediately and can be used without refreshing

Usually, in php, such a piece of code requires the browser to refresh before the cookie can appear. How can I make the cookie take effect in time? I would like to share a method to make the cookie take effect in time. It is very practical. The code is as follows:

//PHP COOKIE setting function takes effect immediately and supports arrays
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);
 }
}

In this way, you can get the cookie value directly without refreshing. Please see the php manual for cookie parameter details.