polylang / uninstall.php

uninstall.php in Polylang 2.7.2, at uninstall.php

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1	<?php
2
3	if ( ! defined( 'WP_UNINSTALL_PLUGIN' ) ) { // If uninstall not called from WordPress exit
4	exit;
5	}
6
7	/**
8	* Manages Polylang uninstallation
9	* The goal is to remove ALL Polylang related data in db
10	*
11	* @since 0.5
12	*/
13	class PLL_Uninstall {
14
15	/**
16	* Constructor: manages uninstall for multisite
17	*
18	* @since 0.5
19	*/
20	public function __construct() {
21	global $wpdb;
22
23	// Don't do anything except if the constant PLL_REMOVE_ALL_DATA is explicitely defined and true.
24	if ( ! defined( 'PLL_REMOVE_ALL_DATA' ) \|\| ! PLL_REMOVE_ALL_DATA ) {
25	return;
26	}
27
28	// Check if it is a multisite uninstall - if so, run the uninstall function for each blog id
29	if ( is_multisite() ) {
30	foreach ( $wpdb->get_col( "SELECT blog_id FROM $wpdb->blogs" ) as $blog_id ) {
31	switch_to_blog( $blog_id );
32	$this->uninstall();
33	}
34	restore_current_blog();
35	}
36	else {
37	$this->uninstall();
38	}
39	}
40
41	/**
42	* Removes ALL plugin data
43	* only when the relevant option is active
44	*
45	* @since 0.5
46	*/
47	public function uninstall() {
48	global $wpdb;
49
50	// Executes each module's uninstall script, if it exists
51	$pll_modules_dir = dirname( __FILE__ ) . '/modules';
52	opendir( $pll_modules_dir );
53	while ( ( $module = readdir() ) != false ) {
54	if ( substr( $module, 0, 1 ) !== '.' ) {
55	$uninstall_script = $pll_modules_dir . '/' . $module . '/uninstall.php';
56	if ( file_exists( $uninstall_script ) ) {
57	require $uninstall_script; // phpcs:ignore WordPressVIPMinimum.Files.IncludingFile.UsingVariable
58	}
59	}
60	}
61	closedir();
62
63	// Suppress data of the old model < 1.2
64	// FIXME: to remove when support for v1.1.6 will be dropped
65	$wpdb->termmeta = $wpdb->prefix . 'termmeta'; // registers the termmeta table in wpdb
66
67	// Do nothing if the termmeta table does not exists
68	if ( count( $wpdb->get_results( "SHOW TABLES LIKE '$wpdb->termmeta'" ) ) ) {
69	$wpdb->query( "DELETE FROM $wpdb->postmeta WHERE meta_key = '_translations'" );
70	$wpdb->query( "DELETE FROM $wpdb->termmeta WHERE meta_key = '_language'" );
71	$wpdb->query( "DELETE FROM $wpdb->termmeta WHERE meta_key = '_rtl'" );
72	$wpdb->query( "DELETE FROM $wpdb->termmeta WHERE meta_key = '_translations'" );
73	}
74
75	// Need to register the taxonomies
76	$pll_taxonomies = array( 'language', 'term_language', 'post_translations', 'term_translations' );
77	foreach ( $pll_taxonomies as $taxonomy ) {
78	register_taxonomy( $taxonomy, null, array( 'label' => false, 'public' => false, 'query_var' => false, 'rewrite' => false ) );
79	}
80
81	$languages = get_terms( 'language', array( 'hide_empty' => false ) );
82
83	// Delete users options
84	foreach ( get_users( array( 'fields' => 'ID' ) ) as $user_id ) {
85	delete_user_meta( $user_id, 'pll_filter_content' );
86	delete_user_meta( $user_id, 'pll_dismissed_notices' ); // Legacy meta.
87	foreach ( $languages as $lang ) {
88	delete_user_meta( $user_id, 'description_' . $lang->slug );
89	}
90	}
91
92	// Delete menu language switchers
93	$ids = get_posts(
94	array(
95	'post_type' => 'nav_menu_item',
96	'numberposts' => -1,
97	'nopaging' => true,
98	'fields' => 'ids',
99	'meta_key' => '_pll_menu_item',
100	)
101	);
102
103	foreach ( $ids as $id ) {
104	wp_delete_post( $id, true );
105	}
106
107	// Delete the strings translations ( <1.2 )
108	// FIXME: to remove when support for v1.1.6 will be dropped
109	foreach ( $languages as $lang ) {
110	delete_option( 'polylang_mo' . $lang->term_id );
111	}
112
113	// Delete the strings translations 1.2+
114	register_post_type( 'polylang_mo', array( 'rewrite' => false, 'query_var' => false ) );
115	$ids = get_posts(
116	array(
117	'post_type' => 'polylang_mo',
118	'post_status' => 'any',
119	'numberposts' => -1,
120	'nopaging' => true,
121	'fields' => 'ids',
122	)
123	);
124	foreach ( $ids as $id ) {
125	wp_delete_post( $id, true );
126	}
127
128	// Delete all what is related to languages and translations
129	$term_ids = array();
130	$tt_ids = array();
131
132	foreach ( get_terms( $pll_taxonomies, array( 'hide_empty' => false ) ) as $term ) {
133	$term_ids[] = (int) $term->term_id;
134	$tt_ids[] = (int) $term->term_taxonomy_id;
135	}
136
137	if ( ! empty( $term_ids ) ) {
138	$term_ids = array_unique( $term_ids );
139	$wpdb->query( "DELETE FROM {$wpdb->terms} WHERE term_id IN ( " . implode( ',', $term_ids ) . ' )' ); // PHPCS:ignore WordPress.DB.PreparedSQL.NotPrepared
140	$wpdb->query( "DELETE FROM {$wpdb->term_taxonomy} WHERE term_id IN ( " . implode( ',', $term_ids ) . ' )' ); // PHPCS:ignore WordPress.DB.PreparedSQL.NotPrepared
141	}
142
143	if ( ! empty( $tt_ids ) ) {
144	$tt_ids = array_unique( $tt_ids );
145	$wpdb->query( "DELETE FROM {$wpdb->term_relationships} WHERE term_taxonomy_id IN ( " . implode( ',', $tt_ids ) . ' )' ); // PHPCS:ignore WordPress.DB.PreparedSQL.NotPrepared
146	}
147
148	// Delete options
149	delete_option( 'polylang' );
150	delete_option( 'widget_polylang' ); // Automatically created by WP
151	delete_option( 'polylang_wpml_strings' ); // Strings registered with icl_register_string
152	delete_option( 'polylang_licenses' );
153	delete_option( 'pll_dismissed_notices' );
154
155	// Delete transients
156	delete_transient( 'pll_languages_list' );
157	delete_transient( 'pll_upgrade_1_4' );
158	}
159	}
160
161	new PLL_Uninstall();
162