Multiple value with comma separation

Question

Next, I am using setcookie in order to get ids of all pages visited per user and so do a kind of history, but I come across a problem when not the possibility to update the cookie value by adding new page id in the same name.

Whenever the value, "3", changes the cookie to the next value, it would have 3 continue and the new value appear after a comma?

<?php 
setcookie("id", "3");
print_r($_COOKIE); 
?>

Answer 1

All you have to do is concatenate the values.

$id = $_COOKIE["id"];
$novoId = "Novo-Valor";

if (!preg_match("/\b{$novoId}\b/", $id)) {
    setcookie("id", $id .= ",{$novoId}");
}

And to separate:

var_dump( explode(",", $_COOKIE["id"]) );