polylang / uninstall.php

uninstall.php in Polylang 2.1.1, at uninstall.php

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