如何从 header 获取 cookie 值到 wordpress 中的模板页面？

Question

I have set the cookie in header.php like below

<?php if($_GET['signup'] == '123' && !isset($_COOKIE['sign'])){
    setcookie("sign", "1", time()+3600);
} ?>

now i need to get this cookie value in the page signup.php. but i cant retrive the value in that page. in Signup.php page i am using the below code for check the cookie,

<?php
/**
Template Name:  Sign Up
 */
$ck = $_COOKIE['sign'];
echo "cookie".$ck;
if(isset($_COOKIE['sign'])){
    header("Location: https://www.ap.com/app/signup.jsp?signup=123");
}
else
{
    header("Location: https://www.ap.com/app/signup.jsp");
}
?>

but it goes to the else condition only (if the cookie is set also). kindly advice...

Answer 1

Try to create a plugin and hook with init action: http://codex.wordpress.org/Plugin_API/Action_Reference/init

function my_set_cookie() {
    if($_GET['signup'] == '123' && !isset($_COOKIE['sign'])) {
        setcookie("sign", "1", time()+3600);
    }
}

add_action('init', 'my_set_cookie');