php 对于在注册新网站时已经拥有特定级别的专业版网站的用户自动应用折扣。这将打折

Posted 2021-05-05

<?php
/*
Plugin Name: Discount Pro Users
Plugin URI: https://premium.wpmudev.org/plugins/pro-sites
Description: Give a discount to members with a pro site
Author: Lindeni Mahlalela @ WPMUDEV
Author URI: https://premium.wpmudev.org/
License: GPLv2 or later
*/
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}
if ( ! class_exists( 'Discount_Pro_Sites' ) ) {
	class Discount_Pro_Sites {
		private static $_instance = null;
		private $_level;
		public static function get_instance() {
			if( is_null( self::$_instance ) ){
				self::$_instance = new Discount_Pro_Sites();
			}
			return self::$_instance;
		}

		private function __construct() {
			$this->_level = 3; //change this to the level you want to have a $1 site
			add_action( 'wp_footer', array( $this, 'change_price' ) );
		}

		public function change_price(){
			$user_id = get_current_user_id();
			if ( self::is_eligible( $user_id, $this->_level ) ) { ?>
				<script type="text/javascript">			
					jQuery(document).ready( function(){
						jQuery('input[name="apply-coupon"]').val("prodiscount");
						if ( jQuery('input[name="apply-coupon"]').val() == "prodiscount") {
							jQuery('.apply-coupon-link').trigger('click');
						}										
					});
				</script><?php	
			}
		}

		public function is_eligible( $user_id, $level ) {
			$blogs = self::get_user_sites( $user_id );

			foreach ( $blogs as $blog ) {
				if ( $blog['level'] == $level ) return true;
			}

			return false;
		}

		public function get_user_sites( $user_id ){
			global $psts;
			$user_blogs = get_blogs_of_user( $user_id );
			$blogs = array();
			foreach ($user_blogs AS $user_blog) {
				switch_to_blog( $user_blog->userblog_id );
				if ( is_pro_site( $user_blog->userblog_id ) && current_user_can( ' administrator') ) {
					$blogs[] = array(
						'blog_id' => $user_blog->userblog_id, 
						'blogname' => $user_blog->blogname, 
						'level' => $psts->get_level( $user_blog->userblog_id ) 
					);
				}
				restore_current_blog();
			}
			return $blogs;
		}
	}
	add_action( 'plugins_loaded', 'discount_pro_sites', 10 );
	function discount_pro_sites(){
		$GLOBALS['Discount_Pro_Sites'] = Discount_Pro_Sites::get_instance();
	}
}