What I'm trying to do:
If anyone who is not logged in, reads an article, I will increase a session var by one. Save that article ID via global $post and save the $post->ID to an array. After 3 articles I will show a login or register form. So I want to limit the free access to the articles to three. The 3 already watched articles should be able to be read anyway.
The main part of the code:
function cta_main($content){
global $post;
if(!is_user_logged_in()){
if(!isset($_SESSION['last_posts'])){
$_SESSION['last_posts']=array();
$_SESSION['count']=1;
$_SESSION['restriction']=false;
}
echo "POST_SIZE: ".sizeOf($post);
echo "<br />Count: ".$_SESSION['count'];
if(is_singular() && !$_SESSION['restriction'] && is_main_query()){
if(!cta_isInFreeToWatch()){
//array_push($_SESSION['last_posts'],$post->post_title);
$_SESSION['count']++;
$_SESSION['last_posts'][]=$post->ID;
}
if(sizeOf($_SESSION['last_posts'])>=3)
$_SESSION['restriction']=true;
}
}
echo "<br /> verbot: ".$_SESSION['restriction'];
echo "<br /> anzahl: ".sizeOf($_SESSION['last_posts']);
echo "<br /> aktuell: ".$post->ID;
echo "<br />";
print_r($_SESSION['last_posts']);
if($_SESSION['restriction'])
return cta_get_the_restricted_area_message();
if(!$_SESSION['restriction'] || cta_isInFreeToWatch())
return $content;
}
The Problem:
First article-> Everything is fine. So the article id is in the array.
Second article-> now it's weird, after loading the page the array has 3 or more ids in it. I don't understand why because I ask for is_single() but it runs multiple times. With every click it adds multiple ids to the array. Why?
I'm sure it's something about the loop but I can't find a solution for that. I think before loading the entire page the function is called multiple times.
(add_filter('the_content','cta_main'); that's when the function is called).
