Disable add to cart button for an array of products IDs in WooCommerce

In WooCommerce, I’m trying to disable add to cart button for an array of product IDs but I can’t find the problem.

I am trying to use this function:

add_filter('woocommerce_is_purchasable', 'my_woocommerce_is_purchasable', 10, 2);

function my_woocommerce_is_purchasable($is_purchasable, $product) {
    $id=check(); // This function return an array of IDs
    foreach ($id as $id_p){
        return ($product->id = $id_p ? false : $is_purchasable);
    }
}

And this is my check() function code (update):

function check() { 
    $listproduit = get_woocommerce_product_list();
    $score = get_score_user(); 
    foreach ($listproduit as $products) { 
        if ($products[1] >= 5000) { 
            $listid = $products[0]; 
            return $listid; 
            // print_r($listid); 
        } 
    } 
    return $listid; 
}

But this doesn’t work.

What am I doing wrong?

Thanks

Answer

Updated for WooCommerce 3+

Use in_array() instead like:

add_filter( 'woocommerce_variation_is_purchasable', 'filter_is_purchasable', 10, 2 );
add_filter('woocommerce_is_purchasable', 'filter_is_purchasable', 10, 2);
function filter_is_purchasable($is_purchasable, $product ) {
    if( in_array( $product->get_id(), not_purchasable_ids() ) {
         return false;
    } 
    return is_purchasable;
}

Where not_purchasable_ids() is the function that returns an array of non purchasable products Ids (here simplified):

function not_purchasable_ids() {
     return array( 37, 53, 128, 129 );
}

This code goes in functions.php file of your active child theme (or active theme). Tested and works.