polylang / uninstall.php

uninstall.php in Polylang 2.8, 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 explicitely 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	}
39	else {
40	$this->uninstall();
41	}
42	}
43
44	/**
45	* Removes ALL plugin data
46	* only when the relevant option is active
47	*
48	* @since 0.5
49	*/
50	public function uninstall() {
51	global $wpdb;
52
53	do_action( 'pll_uninstall' );
54
55	// Suppress data of the old model < 1.2
56	// FIXME: to remove when support for v1.1.6 will be dropped
57	$wpdb->termmeta = $wpdb->prefix . 'termmeta'; // registers the termmeta table in wpdb
58
59	// Do nothing if the termmeta table does not exists
60	if ( count( $wpdb->get_results( "SHOW TABLES LIKE '$wpdb->termmeta'" ) ) ) {
61	$wpdb->query( "DELETE FROM $wpdb->postmeta WHERE meta_key = '_translations'" );
62	$wpdb->query( "DELETE FROM $wpdb->termmeta WHERE meta_key = '_language'" );
63	$wpdb->query( "DELETE FROM $wpdb->termmeta WHERE meta_key = '_rtl'" );
64	$wpdb->query( "DELETE FROM $wpdb->termmeta WHERE meta_key = '_translations'" );
65	}
66
67	// Need to register the taxonomies
68	$pll_taxonomies = array( 'language', 'term_language', 'post_translations', 'term_translations' );
69	foreach ( $pll_taxonomies as $taxonomy ) {
70	register_taxonomy( $taxonomy, null, array( 'label' => false, 'public' => false, 'query_var' => false, 'rewrite' => false ) );
71	}
72
73	$languages = get_terms( 'language', array( 'hide_empty' => false ) );
74
75	// Delete users options
76	foreach ( get_users( array( 'fields' => 'ID' ) ) as $user_id ) {
77	delete_user_meta( $user_id, 'pll_filter_content' );
78	delete_user_meta( $user_id, 'pll_dismissed_notices' ); // Legacy meta.
79	foreach ( $languages as $lang ) {
80	delete_user_meta( $user_id, 'description_' . $lang->slug );
81	}
82	}
83
84	// Delete menu language switchers
85	$ids = get_posts(
86	array(
87	'post_type' => 'nav_menu_item',
88	'numberposts' => -1,
89	'nopaging' => true,
90	'fields' => 'ids',
91	'meta_key' => '_pll_menu_item',
92	)
93	);
94
95	foreach ( $ids as $id ) {
96	wp_delete_post( $id, true );
97	}
98
99	// Delete the strings translations ( <1.2 )
100	// FIXME: to remove when support for v1.1.6 will be dropped
101	foreach ( $languages as $lang ) {
102	delete_option( 'polylang_mo' . $lang->term_id );
103	}
104
105	// Delete the strings translations 1.2+
106	register_post_type( 'polylang_mo', array( 'rewrite' => false, 'query_var' => false ) );
107	$ids = get_posts(
108	array(
109	'post_type' => 'polylang_mo',
110	'post_status' => 'any',
111	'numberposts' => -1,
112	'nopaging' => true,
113	'fields' => 'ids',
114	)
115	);
116	foreach ( $ids as $id ) {
117	wp_delete_post( $id, true );
118	}
119
120	// Delete all what is related to languages and translations
121	$term_ids = array();
122	$tt_ids = array();
123
124	foreach ( get_terms( $pll_taxonomies, array( 'hide_empty' => false ) ) as $term ) {
125	$term_ids[] = (int) $term->term_id;
126	$tt_ids[] = (int) $term->term_taxonomy_id;
127	}
128
129	if ( ! empty( $term_ids ) ) {
130	$term_ids = array_unique( $term_ids );
131	$wpdb->query( "DELETE FROM {$wpdb->terms} WHERE term_id IN ( " . implode( ',', $term_ids ) . ' )' ); // PHPCS:ignore WordPress.DB.PreparedSQL.NotPrepared
132	$wpdb->query( "DELETE FROM {$wpdb->term_taxonomy} WHERE term_id IN ( " . implode( ',', $term_ids ) . ' )' ); // PHPCS:ignore WordPress.DB.PreparedSQL.NotPrepared
133	}
134
135	if ( ! empty( $tt_ids ) ) {
136	$tt_ids = array_unique( $tt_ids );
137	$wpdb->query( "DELETE FROM {$wpdb->term_relationships} WHERE term_taxonomy_id IN ( " . implode( ',', $tt_ids ) . ' )' ); // PHPCS:ignore WordPress.DB.PreparedSQL.NotPrepared
138	}
139
140	// Delete options
141	delete_option( 'polylang' );
142	delete_option( 'widget_polylang' ); // Automatically created by WP
143	delete_option( 'polylang_wpml_strings' ); // Strings registered with icl_register_string
144	delete_option( 'polylang_licenses' );
145	delete_option( 'pll_dismissed_notices' );
146
147	// Delete transients
148	delete_transient( 'pll_languages_list' );
149	delete_transient( 'pll_upgrade_1_4' );
150	}
151	}
152
153	new PLL_Uninstall();
154