wordpress-seo / src / integrations / front-end / crawl-cleanup-basic.php

crawl-cleanup-basic.php in Yoast SEO – Advanced SEO with real-time guidance and built-in AI 28.5, at src/integrations/front-end/crawl-cleanup-basic.php

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1	<?php
2
3	namespace Yoast\WP\SEO\Integrations\Front_End;
4
5	use Yoast\WP\SEO\Conditionals\Front_End_Conditional;
6	use Yoast\WP\SEO\Helpers\Options_Helper;
7	use Yoast\WP\SEO\Integrations\Integration_Interface;
8
9	/**
10	* Class Crawl_Cleanup_Basic.
11	*/
12	class Crawl_Cleanup_Basic implements Integration_Interface {
13
14	/**
15	* The options helper.
16	*
17	* @var Options_Helper
18	*/
19	private $options_helper;
20
21	/**
22	* Crawl Cleanup Basic integration constructor.
23	*
24	* @param Options_Helper $options_helper The option helper.
25	*/
26	public function __construct( Options_Helper $options_helper ) {
27	$this->options_helper = $options_helper;
28	}
29
30	/**
31	* Initializes the integration.
32	*
33	* This is the place to register hooks and filters.
34	*
35	* @return void
36	*/
37	public function register_hooks() {
38	// Remove HTTP headers we don't want.
39	\add_action( 'wp', [ $this, 'clean_headers' ], 0 );
40
41	if ( $this->is_true( 'remove_shortlinks' ) ) {
42	// Remove shortlinks.
43	\remove_action( 'wp_head', 'wp_shortlink_wp_head' );
44	\remove_action( 'template_redirect', 'wp_shortlink_header', 11 );
45	}
46
47	if ( $this->is_true( 'remove_rest_api_links' ) ) {
48	// Remove REST API links.
49	\remove_action( 'wp_head', 'rest_output_link_wp_head' );
50	\remove_action( 'template_redirect', 'rest_output_link_header', 11 );
51	}
52
53	if ( $this->is_true( 'remove_rsd_wlw_links' ) ) {
54	// Remove RSD and WLW Manifest links.
55	\remove_action( 'wp_head', 'rsd_link' );
56	\remove_action( 'xmlrpc_rsd_apis', 'rest_output_rsd' );
57	\remove_action( 'wp_head', 'wlwmanifest_link' );
58	}
59
60	if ( $this->is_true( 'remove_oembed_links' ) ) {
61	// Remove JSON+XML oEmbed links.
62	\remove_action( 'wp_head', 'wp_oembed_add_discovery_links' );
63	}
64
65	if ( $this->is_true( 'remove_generator' ) ) {
66	\remove_action( 'wp_head', 'wp_generator' );
67	}
68
69	if ( $this->is_true( 'remove_emoji_scripts' ) ) {
70	// Remove emoji scripts and additional stuff they cause.
71	\remove_action( 'wp_head', 'print_emoji_detection_script', 7 );
72	\remove_action( 'wp_print_styles', 'print_emoji_styles' );
73	\remove_action( 'admin_print_scripts', 'print_emoji_detection_script' );
74	\remove_action( 'admin_print_styles', 'print_emoji_styles' );
75	\add_filter( 'wp_resource_hints', [ $this, 'resource_hints_plain_cleanup' ], 1 );
76	}
77	}
78
79	/**
80	* Returns the conditionals based in which this loadable should be active.
81	*
82	* @return array The array of conditionals.
83	*/
84	public static function get_conditionals() {
85	return [ Front_End_Conditional::class ];
86	}
87
88	/**
89	* Removes X-Pingback and X-Powered-By headers as they're unneeded.
90	*
91	* @return void
92	*/
93	public function clean_headers() {
94	if ( \headers_sent() ) {
95	return;
96	}
97
98	if ( $this->is_true( 'remove_powered_by_header' ) ) {
99	\header_remove( 'X-Powered-By' );
100	}
101	if ( $this->is_true( 'remove_pingback_header' ) ) {
102	\header_remove( 'X-Pingback' );
103	}
104	}
105
106	/**
107	* Remove the core s.w.org hint as it's only used for emoji stuff we don't use.
108	*
109	* @param array $hints The hints we're adding to.
110	*
111	* @return array
112	*/
113	public function resource_hints_plain_cleanup( $hints ) {
114	foreach ( $hints as $key => $hint ) {
115	if ( \is_array( $hint ) && isset( $hint['href'] ) ) {
116	if ( \strpos( $hint['href'], '//s.w.org' ) !== false ) {
117	unset( $hints[ $key ] );
118	}
119	}
120	elseif ( \strpos( $hint, '//s.w.org' ) !== false ) {
121	unset( $hints[ $key ] );
122	}
123	}
124
125	return $hints;
126	}
127
128	/**
129	* Checks if the value of an option is set to true.
130	*
131	* @param string $option_name The option name.
132	*
133	* @return bool
134	*/
135	private function is_true( $option_name ) {
136	return $this->options_helper->get( $option_name ) === true;
137	}
138	}
139