wp-optimize / compatibility / class-wp-optimize-server-compatibility.php

class-wp-optimize-server-compatibility.php in WP-Optimize – Cache, Compress images, Minify & Clean database to boost page speed & performance 4.7.0, at compatibility/class-wp-optimize-server-compatibility.php

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1	<?php
2	if (!defined('ABSPATH')) die('No direct access allowed');
3
4	if (!class_exists('WP_Optimize_Server_Compatibility')) :
5	/**
6	* Adds compatibility for Servers.
7	*/
8	class WP_Optimize_Server_Compatibility {
9
10	/**
11	* Cached result of the Kinsta server detection.
12	*
13	* Null until first evaluation, then bool for subsequent calls.
14	*
15	* @var bool\|null
16	*/
17	private $is_kinsta_server = null;
18
19	/**
20	* Returns singleton instance
21	*
22	* @return WP_Optimize_Server_Compatibility
23	*/
24	public static function get_instance() {
25	static $instance = null;
26	if (null === $instance) {
27	$instance = new WP_Optimize_Server_Compatibility();
28	}
29	return $instance;
30	}
31
32	/**
33	* Detects whether the server handles cache. e.g. Nginx cache
34	*
35	* @return bool
36	*/
37	public function does_server_handle_cache(): bool {
38	return $this->is_kinsta();
39	}
40
41	/**
42	* Detects whether the server supports table optimization.
43	*
44	* Some servers prevent table optimization because the InnoDB engine
45	* does not optimize tables — instead it drops and recreates them,
46	* resulting in elevated disk write operations.
47	*
48	* @return bool
49	*/
50	public function does_server_allow_table_optimization(): bool {
51	return !$this->is_kinsta();
52	}
53
54	/**
55	* Detects whether the server supports local webp conversion tools
56	*
57	* @return bool
58	*/
59	public function does_server_allow_local_webp_conversion(): bool {
60	return !$this->is_kinsta();
61	}
62
63	/**
64	* Detects if the platform is Kinsta or not.
65	*
66	* Results are cached after the first call to ensure consistency
67	* and avoid redundant filter applications within a single request.
68	*
69	* @return bool Returns true if it is a Kinsta platform, otherwise returns false
70	*/
71	private function is_kinsta(): bool {
72	if (null !== $this->is_kinsta_server) {
73	return $this->is_kinsta_server;
74	}
75
76	$is_kinsta = isset($_SERVER['KINSTA_CACHE_ZONE']);
77
78	/**
79	* Filter whether the server is detected as Kinsta.
80	*
81	* Allows overriding the default detection logic in case
82	* Kinsta changes environment variables or for edge cases.
83	*
84	* @param bool $is_kinsta Detected Kinsta status.
85	*/
86	$this->is_kinsta_server = (bool) apply_filters('wpo_is_kinsta_server', $is_kinsta);
87
88	return $this->is_kinsta_server;
89	}
90
91	/**
92	* Disables automatic table optimization when the server does not allow it.
93	*
94	* Checks the current server capabilities and, if table optimization is
95	* unsupported, updates the "auto" option to disable it. This prevents
96	* scheduled or automatic optimizations from running on incompatible hosts.
97	*
98	* @return void
99	*/
100	public function maybe_disable_unsupported_table_optimization(): void {
101
102	if ($this->does_server_allow_table_optimization()) {
103	return;
104	}
105
106	$options = WP_Optimize()->get_options();
107	$auto_options = $options->get_option('auto');
108
109	if (empty($auto_options) \|\| !is_array($auto_options)) {
110	return;
111	}
112
113	if (isset($auto_options['optimize']) && 'true' === $auto_options['optimize']) {
114	$auto_options['optimize'] = 'false';
115	$options->update_option('auto', $auto_options);
116	}
117	}
118	}
119	endif;
120