PHP cookie does not refresh the implementation code that takes effect in a timely manner

/**
 * Do not refresh the cookie to take effect in time
 * site http://bbs.it-home.org
*/
cookie("mycookie","cookievalue",time()+60);
var_dump($_COOKIE["mycookie"]);

 //PHP COOKIE setting function takes effect immediately, 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, $domain, 0);
 }
 }else{
 setcookie($var, $value, $time, $path, $domain, 0);
 }
}
?>

For those who are interested, you can learn about: Cookie and Session usage in php5.