polylang / uninstall.php

uninstall.php in Polylang 3.8.9, at uninstall.php

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1	<?php
2	/**
3	* @package Polylang
4	*/
5
6	if ( ! defined( 'WP_UNINSTALL_PLUGIN' ) ) { // If uninstall not called from WordPress exit.
7	exit;
8	}
9
10	/**
11	* Manages Polylang uninstallation.
12	* The goal is to remove all Polylang related data in db.
13	*
14	* @since 0.5
15	*/
16	class PLL_Uninstall {
17
18	/**
19	* Constructor: manages uninstall for multisite.
20	*
21	* @since 0.5
22	*/
23	public function __construct() {
24	global $wpdb;
25
26	// Don't do anything except if the constant PLL_REMOVE_ALL_DATA is explicitly defined and true.
27	if ( ! defined( 'PLL_REMOVE_ALL_DATA' ) \|\| ! PLL_REMOVE_ALL_DATA ) {
28	return;
29	}
30
31	// Check if it is a multisite uninstall - if so, run the uninstall function for each blog id.
32	if ( is_multisite() ) {
33	foreach ( $wpdb->get_col( "SELECT blog_id FROM $wpdb->blogs" ) as $blog_id ) {
34	switch_to_blog( $blog_id );
35	$this->uninstall();
36	}
37	restore_current_blog();
38	} else {
39	$this->uninstall();
40	}
41	}
42
43	/**
44	* Removes all plugin data.
45	*
46	* @since 0.5
47	*/
48	public function uninstall() {
49	global $wpdb;
50
51	do_action( 'pll_uninstall' );
52
53	// We need to register the taxonomies.
54	$pll_taxonomies = array(
55	'language',
56	'term_language',
57	'post_translations',
58	'term_translations',
59	);
60
61	foreach ( $pll_taxonomies as $taxonomy ) {
62	register_taxonomy(
63	$taxonomy,
64	null,
65	array(
66	'label' => false,
67	'public' => false,
68	'query_var' => false,
69	'rewrite' => false,
70	)
71	);
72	}
73
74	$languages = get_terms(
75	array(
76	'taxonomy' => 'language',
77	'hide_empty' => false,
78	)
79	);
80
81	// Delete users options.
82	delete_metadata( 'user', 0, 'pll_filter_content', '', true );
83	delete_metadata( 'user', 0, 'pll_dismissed_notices', '', true ); // Legacy meta.
84	foreach ( $languages as $lang ) {
85	delete_metadata( 'user', 0, "description_{$lang->slug}", '', true );
86	}
87
88	// Delete menu language switchers.
89	$ids = get_posts(
90	array(
91	'post_type' => 'nav_menu_item',
92	'numberposts' => -1,
93	'nopaging' => true,
94	'fields' => 'ids',
95	'meta_key' => '_pll_menu_item',
96	)
97	);
98
99	foreach ( $ids as $id ) {
100	wp_delete_post( $id, true );
101	}
102
103	/*
104	* Backward compatibility with Polylang < 3.4.
105	* Delete the legacy strings translations.
106	*/
107	register_post_type(
108	'polylang_mo',
109	array(
110	'rewrite' => false,
111	'query_var' => false,
112	)
113	);
114	$ids = get_posts(
115	array(
116	'post_type' => 'polylang_mo',
117	'post_status' => 'any',
118	'numberposts' => -1,
119	'nopaging' => true,
120	'fields' => 'ids',
121	)
122	);
123	foreach ( $ids as $id ) {
124	wp_delete_post( $id, true );
125	}
126
127	// Delete all what is related to languages and translations.
128	$term_ids = array();
129	$tt_ids = array();
130
131	$terms = get_terms(
132	array(
133	'taxonomy' => $pll_taxonomies,
134	'hide_empty' => false,
135	)
136	);
137
138	foreach ( $terms as $term ) {
139	$term_ids[] = (int) $term->term_id;
140	$tt_ids[] = (int) $term->term_taxonomy_id;
141	}
142
143	if ( ! empty( $term_ids ) ) {
144	$term_ids = array_unique( $term_ids );
145	$wpdb->query(
146	$wpdb->prepare(
147	sprintf(
148	"DELETE FROM {$wpdb->terms} WHERE term_id IN (%s)",
149	implode( ',', array_fill( 0, count( $term_ids ), '%d' ) )
150	),
151	$term_ids
152	)
153	);
154	$wpdb->query(
155	$wpdb->prepare(
156	sprintf(
157	"DELETE FROM {$wpdb->term_taxonomy} WHERE term_id IN (%s)",
158	implode( ',', array_fill( 0, count( $term_ids ), '%d' ) )
159	),
160	$term_ids
161	)
162	);
163	$wpdb->query(
164	$wpdb->prepare(
165	sprintf(
166	"DELETE FROM {$wpdb->termmeta} WHERE term_id IN (%s) AND meta_key='_pll_strings_translations'",
167	implode( ',', array_fill( 0, count( $term_ids ), '%d' ) )
168	),
169	$term_ids
170	)
171	);
172	}
173
174	if ( ! empty( $tt_ids ) ) {
175	$tt_ids = array_unique( $tt_ids );
176	$wpdb->query( $wpdb->prepare( sprintf( "DELETE FROM {$wpdb->term_relationships} WHERE term_taxonomy_id IN (%s)", implode( ',', array_fill( 0, count( $tt_ids ), '%d' ) ) ), $tt_ids ) );
177	}
178
179	// Delete options.
180	delete_option( 'polylang' );
181	delete_option( 'widget_polylang' ); // Automatically created by WP.
182	delete_option( 'polylang_wpml_strings' ); // Strings registered with icl_register_string.
183	delete_option( 'polylang_licenses' );
184	delete_option( 'pll_dismissed_notices' );
185	delete_option( 'pll_language_from_content_available' );
186	delete_option( 'pll_language_taxonomies' );
187
188	// Delete transients.
189	delete_option( '_transient_pll_languages_list' ); // Force deletion of the transient from the options table even in case external object cache is used.
190	}
191	}
192
193	new PLL_Uninstall();
194