dkpdf_hide_button_isset-dkpdf_hide_button_equal.php

<?php
function dkpdfg_hide_button_isset() {
	return isset( $_POST['dkpdfg_action_create'] ) || isset( $_POST['dkpdfg_action_create_categories'] );
}
add_filter( 'dkpdf_hide_button_isset', 'dkpdfg_hide_button_isset' );

function dkpdfg_hide_button_equal() {
	return $_POST['dkpdfg_action_create'] == 'dkpdfg_action_create' || $_POST['dkpdfg_action_create_categories'] == 'dkpdfg_action_create_categories';
}
add_filter( 'dkpdf_hide_button_equal', 'dkpdfg_hide_button_equal' );