wp-head-cleaner / wp-head-cleaner.php

wp-head-cleaner.php in wp_head() cleaner trunk, at wp-head-cleaner.php

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1	<?php
2	/**
3	* Plugin Name: wp_head() cleaner
4	* Plugin URI: https://wordpress.org/plugins/wp-head-cleaner/
5	* Description: Remove unused tags from wp_head() output.
6	* Version: 3.1.0
7	* License: GPL2
8	* Author: Jonathan Wilsson
9	* Author URI: http://jwilsson.com/
10	* Text Domain: wp-head-cleaner
11	*/
12
13	if ( ! defined( 'ABSPATH' ) ) {
14	die( 'No direct access allowed!' );
15	}
16
17	class WP_Head_Cleaner {
18	const OPTION_GROUP = 'wp_head_cleaner_options';
19	const OPTION_NAME = 'wp_head_cleaner_hooks';
20	const OPTION_SLUG = 'wp_head_cleaner';
21
22	private $options = array();
23	private $hooks = array();
24
25	public function __construct() {
26	add_action( 'admin_init', array( $this, 'admin_init' ) );
27	add_action( 'admin_menu', array( $this, 'admin_menu' ) );
28	add_action( 'init', array( $this, 'init' ) );
29
30	add_filter( 'plugin_action_links_' . plugin_basename( __FILE__ ), array( $this, 'plugin_action_links' ) );
31	}
32
33	public function setup_hooks() {
34	$this->hooks = array(
35	array(
36	'title' => __( 'Really Simple Discovery', 'wp-head-cleaner' ),
37	'description' => __( 'Don\'t print tags for the XML-RPC discover mechanism.', 'wp-head-cleaner' ),
38	'action' => 'rsd_link',
39	'hook' => 'wp_head',
40	'priority' => 10,
41	'args' => 1,
42	),
43	array(
44	'title' => __( 'Windows Live Writer', 'wp-head-cleaner' ),
45	'description' => __( 'Don\'t print tags used by Windows Live Writer.', 'wp-head-cleaner' ),
46	'action' => 'wlwmanifest_link',
47	'hook' => 'wp_head',
48	'priority' => 10,
49	'args' => 1,
50	),
51	array(
52	'title' => __( 'WordPress generator meta tag', 'wp-head-cleaner' ),
53	'description' => __( 'Don\'t print the WordPress version.', 'wp-head-cleaner' ),
54	'action' => 'wp_generator',
55	'hook' => 'wp_head',
56	'priority' => 10,
57	'args' => 1,
58	),
59	array(
60	'title' => __( 'Post shortlinks', 'wp-head-cleaner' ),
61	'description' => __( 'Don\'t print post short links.', 'wp-head-cleaner' ),
62	'action' => 'wp_shortlink_wp_head',
63	'hook' => 'wp_head',
64	'priority' => 10,
65	'args' => 0,
66	),
67	array(
68	'title' => __( 'Canonical links', 'wp-head-cleaner' ),
69	'description' => __( 'Don\'t print post canonical link.', 'wp-head-cleaner' ),
70	'action' => 'rel_canonical',
71	'hook' => 'wp_head',
72	'priority' => 10,
73	'args' => 0,
74	),
75	array(
76	'title' => __( 'Post and Comment Feed', 'wp-head-cleaner' ),
77	'description' => __( 'Don\'t print links for the posts and comments feeds.', 'wp-head-cleaner' ),
78	'action' => 'feed_links',
79	'hook' => 'wp_head',
80	'priority' => 2,
81	'args' => 1,
82	),
83	array(
84	'title' => __( 'Other feeds, for example category feeds', 'wp-head-cleaner' ),
85	'description' => __( 'Don\'t print links to other feeds, for example categories.', 'wp-head-cleaner' ),
86	'action' => 'feed_links_extra',
87	'hook' => 'wp_head',
88	'priority' => 3,
89	'args' => 1,
90	),
91	array(
92	'title' => __( 'Emoji scripts', 'wp-head-cleaner' ),
93	'description' => __( 'Don\'t print scripts for emoji support.', 'wp-head-cleaner' ),
94	'action' => 'print_emoji_detection_script',
95	'hook' => 'wp_head',
96	'priority' => 7,
97	'args' => 1,
98	),
99	array(
100	'title' => __( 'Emoji styles', 'wp-head-cleaner' ),
101	'description' => __( 'Don\'t print styles for emoji support.', 'wp-head-cleaner' ),
102	'action' => 'print_emoji_styles',
103	'hook' => 'wp_print_styles',
104	'priority' => 10,
105	'args' => 1,
106	),
107	array(
108	'title' => __( 'REST API', 'wp-head-cleaner' ),
109	'description' => __( 'Don\'t print REST API endpoint tags.', 'wp-head-cleaner' ),
110	'action' => 'rest_output_link_wp_head',
111	'hook' => 'wp_head',
112	'priority' => 10,
113	'args' => 0,
114	),
115	array(
116	'title' => __( 'oEmbed tags', 'wp-head-cleaner' ),
117	'description' => __( 'Don\'t print tags for the oEmbed discover mechanism.', 'wp-head-cleaner' ),
118	'action' => 'wp_oembed_add_discovery_links',
119	'hook' => 'wp_head',
120	'priority' => 10,
121	'args' => 1,
122	),
123	array(
124	'title' => __( 'oEmbed scripts', 'wp-head-cleaner' ),
125	'description' => __( 'Don\'t print scripts for the oEmbed discover mechanism.', 'wp-head-cleaner' ),
126	'action' => 'wp_oembed_add_host_js',
127	'hook' => 'wp_head',
128	'priority' => 10,
129	'args' => 1,
130	),
131	array(
132	'title' => __( 'Resource hints', 'wp-head-cleaner' ),
133	'description' => __( 'Don\'t print tags for browser pre-fetching, pre-rendering, and pre-connecting hints.', 'wp-head-cleaner' ),
134	'action' => 'wp_resource_hints',
135	'hook' => 'wp_head',
136	'priority' => 2,
137	'args' => 1,
138	),
139	array(
140	'title' => __( 'Robots image preview', 'wp-head-cleaner' ),
141	'description' => __( 'Don\'t print tags for web robots image preview directive.', 'wp-head-cleaner' ),
142	'action' => 'wp_robots_max_image_preview_large',
143	'hook' => 'wp_robots',
144	'priority' => 10,
145	'args' => 1,
146	),
147	);
148	}
149
150	public function admin_init() {
151	global $pagenow;
152
153	// Don't do anything unless it's the correct page
154	if ( 'options.php' !== $pagenow && 'options-general.php' !== $pagenow ) {
155	return;
156	}
157
158	add_settings_section( 'default', '', array( $this, 'render_section' ), self::OPTION_SLUG );
159	register_setting( self::OPTION_GROUP, self::OPTION_NAME, array(
160	'type' => 'array',
161	'sanitize_callback' => function ( $input ) {
162	if ( ! is_array( $input ) ) {
163	return array();
164	}
165
166	return array_map( 'sanitize_text_field', $input );
167	},
168	) );
169
170	foreach ( $this->hooks as $hook ) {
171	$action = $hook['action'];
172	$index = array_search( $action, $this->options );
173	$value = false !== $index ? $this->options[ $index ] : '';
174	$args = array(
175	'name' => $action,
176	'value' => (bool) $value,
177	'label_for' => $action,
178	'description' => $hook['description'],
179	'option_name' => self::OPTION_NAME,
180	);
181
182	add_settings_field(
183	$action,
184	$hook['title'],
185	array( $this, 'render_field' ),
186	self::OPTION_SLUG,
187	'default',
188	$args,
189	);
190	}
191	}
192
193	public function admin_menu() {
194	add_options_page(
195	__( 'Options for wp_head() cleaner', 'wp-head-cleaner' ),
196	__( 'wp_head() cleaner', 'wp-head-cleaner' ),
197	'manage_options',
198	self::OPTION_SLUG,
199	array( $this, 'render_page' ),
200	);
201	}
202
203	public function init() {
204	$this->options = (array) get_option( self::OPTION_NAME );
205	$this->setup_hooks();
206
207	foreach ( $this->hooks as $hook ) {
208	$action = $hook['action'];
209
210	// Bail if the tag shouldn't be removed
211	if ( ! in_array( $action, $this->options ) ) {
212	continue;
213	}
214
215	remove_action( $hook['hook'], $action, $hook['priority'], $hook['args'] );
216	}
217	}
218
219	public function plugin_action_links( $links ) {
220	$settings_link = esc_url( get_admin_url( null, 'options-general.php?page=' . self::OPTION_SLUG ) );
221
222	$links[] = sprintf( '<a href="%s">%s</a>', $settings_link, __( 'Settings', 'wp-head-cleaner' ) );
223	$links[] = '<a href="https://github.com/jwilsson/wp-head-cleaner" target="_blank">GitHub</a>';
224
225	return $links;
226	}
227
228	public function render_page() {
229	global $title;
230
231	if ( ! current_user_can( 'manage_options' ) ) {
232	wp_die( 'Cheatin\' Uh?' );
233	}
234	?>
235	<div class="wrap">
236	<h1><?php echo esc_html( $title ); ?></h1>
237
238	<form action="options.php" method="post">
239	<?php
240	settings_fields( self::OPTION_GROUP );
241	do_settings_sections( self::OPTION_SLUG );
242	submit_button();
243	?>
244	</form>
245	</div>
246	<?php
247	}
248
249	public function render_section() {
250	echo '<p>' . esc_html__( 'Check the tags you wish to remove.', 'wp-head-cleaner' ) . '</p>';
251	}
252
253	public function render_field( $args ) {
254	printf(
255	'<input type="checkbox" name="%s[]" id="%s" value="%s" %s> <label for="%s"><i>%s</i></label>',
256	esc_attr( $args['option_name'] ),
257	esc_attr( $args['label_for'] ),
258	esc_attr( $args['name'] ),
259	checked( $args['value'], true, false ),
260	esc_attr( $args['label_for'] ),
261	esc_html( $args['description'] ),
262	);
263	}
264	}
265
266	new WP_Head_Cleaner();
267