wp-optimize / compatibility / class-wpo-polylang-compatibility.php

class-wpo-polylang-compatibility.php in WP-Optimize – Cache, Compress images, Minify & Clean database to boost page speed & performance 4.7.0, at compatibility/class-wpo-polylang-compatibility.php

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1	<?php
2	if (!defined('ABSPATH')) {
3	die('No direct access allowed');
4	}
5
6	/**
7	* Adds compatibility for Polylang plugin.
8	*/
9	class WPO_Polylang_Compatibility {
10
11	/**
12	* Instance of this class
13	*
14	* @var WPO_Polylang_Compatibility\|null
15	*/
16	protected static $instance = null;
17
18	/**
19	* Constructor.
20	*/
21	private function __construct() {
22	add_action('wpo_single_post_cache_deleted', array($this, 'delete_post_cache_for_all_languages'));
23	add_action('wpo_single_post_feed_cache_deleted', array($this, 'delete_post_feed_cache_for_all_languages'));
24	}
25
26	/**
27	* Returns singleton instance.
28	*
29	* @return WPO_Polylang_Compatibility
30	*/
31	public static function instance() {
32	if (null === self::$instance) {
33	self::$instance = new self();
34	}
35
36	return self::$instance;
37	}
38
39	/**
40	* Gets translated post IDs excluding the original post.
41	*
42	* @param int $post_id The original post ID.
43	* @return array<string, int> List of translated post IDs, excluding the original.
44	*/
45	private function get_related_translations($post_id) {
46	if (!function_exists('pll_get_post_translations')) {
47	return array();
48	}
49
50	$translations = pll_get_post_translations($post_id);
51
52	return array_filter($translations, function ($id) use ($post_id) {
53	return $id !== $post_id;
54	});
55	}
56
57	/**
58	* Deletes cache files for all connected languages for a post.
59	*
60	* @param int $deleted_post_id Post id whose cache file is already deleted.
61	* @return void
62	*/
63	public function delete_post_cache_for_all_languages($deleted_post_id) {
64	$related_ids = $this->get_related_translations($deleted_post_id);
65
66	foreach ($related_ids as $post_id) {
67	WPO_Page_Cache::really_delete_single_post_cache($post_id);
68	}
69
70	if (!empty($related_ids)) {
71	WPO_Page_Cache::instance()->file_log("Cache for associated Polylang translation posts for Title: {{title}} have been purged", $deleted_post_id);
72	}
73	}
74
75	/**
76	* Deletes cache files for all connected languages for a post feed.
77	*
78	* @param int $deleted_post_id Post id whose cache file for feed is already deleted.
79	* @return void
80	*/
81	public function delete_post_feed_cache_for_all_languages($deleted_post_id) {
82	$related_ids = $this->get_related_translations($deleted_post_id);
83
84	foreach ($related_ids as $post_id) {
85	WPO_Page_Cache::really_delete_post_feed_cache($post_id);
86	}
87
88	if (!empty($related_ids)) {
89	WPO_Page_Cache::instance()->file_log("Cache for associated Polylang translation posts' feeds for Title: {{title}} have been purged", $deleted_post_id);
90	}
91	}
92	}
93