polylang / uninstall.php

uninstall.php in Polylang 3.5, 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	// Need to register the taxonomies
56	$pll_taxonomies = array( 'language', 'term_language', 'post_translations', 'term_translations' );
57	foreach ( $pll_taxonomies as $taxonomy ) {
58	register_taxonomy( $taxonomy, null, array( 'label' => false, 'public' => false, 'query_var' => false, 'rewrite' => false ) );
59	}
60
61	$languages = get_terms( array( 'taxonomy' => 'language', 'hide_empty' => false ) );
62
63	// Delete users options
64	foreach ( get_users( array( 'fields' => 'ID' ) ) as $user_id ) {
65	delete_user_meta( $user_id, 'pll_filter_content' );
66	delete_user_meta( $user_id, 'pll_dismissed_notices' ); // Legacy meta.
67	foreach ( $languages as $lang ) {
68	delete_user_meta( $user_id, 'description_' . $lang->slug );
69	}
70	}
71
72	// Delete menu language switchers
73	$ids = get_posts(
74	array(
75	'post_type' => 'nav_menu_item',
76	'numberposts' => -1,
77	'nopaging' => true,
78	'fields' => 'ids',
79	'meta_key' => '_pll_menu_item',
80	)
81	);
82
83	foreach ( $ids as $id ) {
84	wp_delete_post( $id, true );
85	}
86
87	/*
88	* Backward compatibility with Polylang < 3.4.
89	* Delete the legacy strings translations.
90	*/
91	register_post_type( 'polylang_mo', array( 'rewrite' => false, 'query_var' => false ) );
92	$ids = get_posts(
93	array(
94	'post_type' => 'polylang_mo',
95	'post_status' => 'any',
96	'numberposts' => -1,
97	'nopaging' => true,
98	'fields' => 'ids',
99	)
100	);
101	foreach ( $ids as $id ) {
102	wp_delete_post( $id, true );
103	}
104
105	// Delete all what is related to languages and translations
106	$term_ids = array();
107	$tt_ids = array();
108
109	foreach ( get_terms( array( 'taxonomy' => $pll_taxonomies, 'hide_empty' => false ) ) as $term ) {
110	$term_ids[] = (int) $term->term_id;
111	$tt_ids[] = (int) $term->term_taxonomy_id;
112	}
113
114	if ( ! empty( $term_ids ) ) {
115	$term_ids = array_unique( $term_ids );
116	$wpdb->query( "DELETE FROM {$wpdb->terms} WHERE term_id IN ( " . implode( ',', $term_ids ) . ' )' ); // PHPCS:ignore WordPress.DB.PreparedSQL.NotPrepared
117	$wpdb->query( "DELETE FROM {$wpdb->term_taxonomy} WHERE term_id IN ( " . implode( ',', $term_ids ) . ' )' ); // PHPCS:ignore WordPress.DB.PreparedSQL.NotPrepared
118	$wpdb->query( "DELETE FROM {$wpdb->termmeta} WHERE term_id IN ( " . implode( ',', $term_ids ) . " ) AND meta_key='_pll_strings_translations'" ); // PHPCS:ignore WordPress.DB.PreparedSQL.NotPrepared
119	}
120
121	if ( ! empty( $tt_ids ) ) {
122	$tt_ids = array_unique( $tt_ids );
123	$wpdb->query( "DELETE FROM {$wpdb->term_relationships} WHERE term_taxonomy_id IN ( " . implode( ',', $tt_ids ) . ' )' ); // PHPCS:ignore WordPress.DB.PreparedSQL.NotPrepared
124	}
125
126	// Delete options
127	delete_option( 'polylang' );
128	delete_option( 'widget_polylang' ); // Automatically created by WP
129	delete_option( 'polylang_wpml_strings' ); // Strings registered with icl_register_string
130	delete_option( 'polylang_licenses' );
131	delete_option( 'pll_dismissed_notices' );
132
133	// Delete transients
134	delete_transient( 'pll_languages_list' );
135	}
136	}
137
138	new PLL_Uninstall();
139