emailoctopus / emailoctopus.php

emailoctopus.php in Email Marketing by EmailOctopus 2.2.0, at emailoctopus.php

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1	<?php
2	/**
3	* Plugin Name: EmailOctopus
4	* Plugin URI: https://emailoctopus.com
5	* Description: Email marketing widget; easily add subscribers to an EmailOctopus list. Fully customisable.
6	* Version: 2.2.0
7	* Author: EmailOctopus
8	* Author URI: https://emailoctopus.com
9	* Text Domain: emailoctopus
10	* License: GPL-2.0+
11	* License URI: http://www.gnu.org/licenses/gpl-2.0.txt
12	* Domain Path: /languages
13	*/
14
15	// Exit if accessed directly.
16	if (!defined('ABSPATH')) {
17	exit;
18	}
19
20	// If the user does not have a sufficient version of PHP, exit.
21	if (version_compare(PHP_VERSION, '5.6.0', '<')) {
22	/**
23	* Add admin message about old version of PHP.
24	*
25	* Prints an update nag when site uses PHP version prior to 5.6.
26	*
27	* @TODO: Once plugin requires WP 5.2+, switch to built-in function validate_plugin_requirements().
28	*/
29	function emailoctopus_upgrade_notice()
30	{
31	// Only to administrators.
32	if (!current_user_can('activate_plugins')){
33	return;
34	}
35	$error_message = sprintf(
36	/* translators: 1: Current PHP version, 2: Required PHP version. */
37	__('<strong>Error:</strong> Current PHP version (%1$s) does not meet minimum requirements for EmailOctopus. The plugin requires PHP %2$s.', 'emailoctopus'),
38	phpversion(),
39	'5.6'
40	);
41	$php_update_message = sprintf(
42	/* translators: %s: URL to Update PHP page. */
43	__('<a href="%s">Learn more about updating PHP</a>.', 'emailoctopus'),
44	esc_url(_x('https://wordpress.org/support/update-php/', 'localized PHP upgrade information page', 'emailoctopus'))
45	);
46	printf('<div class="error"><p>%s</p><p>%s</p></div>', $error_message, $php_update_message);
47	}
48	add_action('all_admin_notices', 'emailoctopus_upgrade_notice');
49	return;
50	}
51
52	use EmailOctopus\Admin\Admin_Container as Admin;
53	use EmailOctopus\Frontend\Frontend_Container as Frontend;
54
55	if (!class_exists('EmailOctopus')) :
56
57	/**
58	* Main plugin class.
59	*/
60	final class EmailOctopus
61	{
62	private static $instance = null;
63	private $slug = 'emailoctopus';
64	private $url = '';
65	private $file = __FILE__;
66
67	/**
68	* Holds admin container class instance.
69	*
70	* @var \EmailOctopus\Admin\Admin_Container
71	*/
72	public $admin;
73
74	/**
75	* Holds frontend container class instance.
76	*
77	* @var \EmailOctopus\Frontend\Frontend_Container
78	*/
79	public $public;
80
81	/**
82	* Class constructor.
83	*
84	* Set up internationalization, auto-loader, and plugin initialization.
85	*/
86	private function __construct()
87	{
88	// Init internationalization.
89	load_plugin_textdomain('emailoctopus', false, dirname(plugin_basename(__FILE__)) . '/languages/');
90
91	// Load the plugin.
92	add_action('init', [$this, 'init'], 0);
93	}
94
95	/**
96	* Retrieve a class instance.
97	*
98	* @return EmailOctopus Instance of the class.
99	*/
100	public static function get_instance()
101	{
102	if (!isset(self::$instance) && !(self::$instance instanceof EmailOctopus)) {
103	self::$instance = new self();
104	self::$instance->setup_constants();
105	self::$instance->require_global();
106	}
107
108	return self::$instance;
109	}
110
111	/**
112	* Loads all global files into scope.
113	*/
114	public function require_global()
115	{
116	require_once trailingslashit(EMAILOCTOPUS_DIR) . 'Functions/common.php';
117	}
118
119	/**
120	* Setup environmental constants for EmailOctopus.
121	*
122	* @return void
123	*/
124	public function setup_constants()
125	{
126	$this->define('EMAILOCTOPUS_VERSION', '2.2.0');
127	$this->define('EMAILOCTOPUS_URL', $this->url);
128	$this->define('EMAILOCTOPUS_SLUG', $this->slug);
129	$this->define('EMAILOCTOPUS_FILE', $this->file);
130	$this->define('EMAILOCTOPUS_DIR', plugin_dir_path(__FILE__));
131	$this->define('EMAILOCTOPUS_URL', plugin_dir_url(__FILE__));
132	}
133
134	/**
135	* Replaces mb_substr.
136	*
137	* @static
138	*
139	* @param string $string The string.
140	* @param int $offset The offset.
141	* @param int $length The length.
142	*
143	* @return string
144	*/
145	public static function mb_substr($string, $offset, $length)
146	{
147	$arr = preg_split('//u', $string);
148	$slice = array_slice($arr, $offset + 1, $length);
149
150	return implode('', $slice);
151	}
152
153	/**
154	* Autoload function.
155	*
156	* @static
157	*
158	* @param mixed $class The class.
159	*
160	* @return void
161	*/
162	public static function autoload($class)
163	{
164	// Prepare variables.
165	$prefix = 'EmailOctopus';
166	$base_dir = __DIR__ . '/';
167	$length = mb_strlen($prefix);
168
169	// If the class is not using the namespace prefix, return.
170	if (0 !== strncmp($prefix, $class, $length)) {
171	return;
172	}
173
174	// Prepare classes to be autoloaded.
175	$relative_class = self::mb_substr($class, 0, strlen($class));
176	$relative_class = str_replace('EmailOctopus\\', '', $relative_class);
177	$file = $base_dir . str_replace('\\', '/', $relative_class) . '.php';
178
179	// If the file exists, load it.
180	if (file_exists($file)) {
181	require $file;
182	}
183	}
184
185	/**
186	* Loads the plugin into WordPress.
187	*/
188	public function init()
189	{
190	// Kick off the frontend.
191	$this->public = new Frontend();
192
193	// Load admin only components.
194	if (is_admin()) {
195	// Kick off the Admin.
196	$this->admin = new Admin();
197	}
198	}
199
200	/**
201	* Helper Method to define constants.
202	*
203	* @param string $name The name.
204	* @param mixed $value The value.
205	*
206	* @return void
207	*/
208	public function define($name, $value)
209	{
210	if (!defined($name)) {
211	define($name, $value);
212	}
213	}
214	}
215
216	spl_autoload_register('EmailOctopus::autoload');
217
218	/**
219	* Init function.
220	*
221	* @return EmailOctopus
222	*/
223	function emailoctopus_start()
224	{
225	return EmailOctopus::get_instance();
226	}
227
228	add_action('plugins_loaded', 'emailoctopus_start');
229
230	endif;
231