ezcache / includes / DatabaseOptimizer.php

DatabaseOptimizer.php in ezCache 2.6.1, at includes/DatabaseOptimizer.php

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1	<?php
2
3	namespace Upress\EzCache;
4
5	/**
6	* One-click database cleanup, similar to WP Rocket's Database tab.
7	*
8	* Available cleanup tasks:
9	* - Revisions, auto-drafts, trashed posts
10	* - Spam and trashed comments
11	* - Expired transients
12	* - Optimize MyISAM/InnoDB tables (`OPTIMIZE TABLE`)
13	*
14	* Each task is opt-in via the corresponding setting flag and `clean()` returns
15	* a per-task summary so the UI can show what was cleaned up.
16	*/
17	class DatabaseOptimizer {
18
19	/**
20	* Run the cleanup tasks enabled by the user.
21	*
22	* @param array $tasks Optional explicit list of tasks; defaults to all enabled in settings.
23	* @return array Per task counts.
24	*/
25	public function clean( $tasks = null ) {
26	global $wpdb;
27
28	$settings = Settings::get_settings();
29	$results = [];
30
31	$enabled = function ( $key ) use ( $tasks, $settings ) {
32	if ( is_array( $tasks ) ) {
33	return in_array( $key, $tasks, true );
34	}
35	return ! empty( $settings->{ $key } );
36	};
37
38	if ( $enabled( 'db_cleanup_revisions' ) ) {
39	$results['revisions'] = (int) $wpdb->query( "DELETE FROM {$wpdb->posts} WHERE post_type = 'revision'" );
40	}
41
42	if ( $enabled( 'db_cleanup_auto_drafts' ) ) {
43	$results['auto_drafts'] = (int) $wpdb->query( "DELETE FROM {$wpdb->posts} WHERE post_status = 'auto-draft'" );
44	}
45
46	if ( $enabled( 'db_cleanup_trashed_posts' ) ) {
47	$results['trashed_posts'] = (int) $wpdb->query( "DELETE FROM {$wpdb->posts} WHERE post_status = 'trash'" );
48	}
49
50	if ( $enabled( 'db_cleanup_spam_comments' ) ) {
51	$results['spam_comments'] = (int) $wpdb->query( "DELETE FROM {$wpdb->comments} WHERE comment_approved = 'spam'" );
52	}
53
54	if ( $enabled( 'db_cleanup_trashed_comments' ) ) {
55	$results['trashed_comments'] = (int) $wpdb->query( "DELETE FROM {$wpdb->comments} WHERE comment_approved = 'trash' OR comment_approved = 'post-trashed'" );
56	}
57
58	if ( $enabled( 'db_cleanup_expired_transients' ) ) {
59	$now = time();
60	$results['expired_transients'] = (int) $wpdb->query(
61	$wpdb->prepare(
62	"DELETE a, b FROM {$wpdb->options} a, {$wpdb->options} b
63	WHERE a.option_name LIKE %s
64	AND a.option_name NOT LIKE %s
65	AND b.option_name = CONCAT( '_transient_timeout_', SUBSTRING( a.option_name, 12 ) )
66	AND b.option_value < %d",
67	$wpdb->esc_like( '_transient_' ) . '%',
68	$wpdb->esc_like( '_transient_timeout_' ) . '%',
69	$now
70	)
71	);
72	}
73
74	if ( $enabled( 'db_cleanup_orphan_postmeta' ) ) {
75	$results['orphan_postmeta'] = (int) $wpdb->query( "DELETE pm FROM {$wpdb->postmeta} pm LEFT JOIN {$wpdb->posts} p ON p.ID = pm.post_id WHERE p.ID IS NULL" );
76	}
77
78	if ( $enabled( 'db_optimize_tables' ) ) {
79	$tables = $wpdb->get_col( "SHOW TABLES LIKE '{$wpdb->prefix}%'" );
80	$optimized = 0;
81	foreach ( $tables as $table ) {
82	if ( false !== $wpdb->query( "OPTIMIZE TABLE `{$table}`" ) ) {
83	$optimized++;
84	}
85	}
86	$results['optimized_tables'] = $optimized;
87	}
88
89	// Clear post cache so updates are reflected immediately.
90	Cache::instance()->clear_cache();
91
92	return $results;
93	}
94
95	/**
96	* Schedule a recurring cleanup based on the settings.
97	*/
98	public function schedule() {
99	$settings = Settings::get_settings();
100
101	$timestamp = wp_next_scheduled( 'ezcache_db_cleanup' );
102	if ( empty( $settings->db_cleanup_schedule ) \|\| 'never' === $settings->db_cleanup_schedule ) {
103	if ( $timestamp ) {
104	wp_unschedule_event( $timestamp, 'ezcache_db_cleanup' );
105	}
106	return;
107	}
108
109	if ( ! $timestamp ) {
110	wp_schedule_event( time() + DAY_IN_SECONDS, $settings->db_cleanup_schedule, 'ezcache_db_cleanup' );
111	}
112	}
113	}
114