Easy Digital Downloads defaults to using 10 results per page when using the get_products() method. You can modify this default using the edd_api_results_per_page filter.
Here’s how to fetch all products at once:
$EDD_API = new EDD_API;
// Force EDD to show all the downloads at once.
add_filter('edd_api_results_per_page', 'modify_edd_api_results_per_page' );
// Get all the EDD products
$products = $EDD_API->get_products();
// Restore sanity to EDD results per page.
remove_filter('edd_api_results_per_page', 'modify_edd_api_results_per_page' );
/**
* Modify the number of results fetched by EDD
* @param int $per_page Previous results per page setting
* @return int New results per page setting. If you have this many, you're in trouble.
*/
function results_per_page($per_page) {
return 99999999; // Yeah, you've got lots of products!
}