wp-optimize / includes / class-wp-optimize-utils.php

class-wp-optimize-utils.php in WP-Optimize – Cache, Compress images, Minify & Clean database to boost page speed & performance 3.7.1, at includes/class-wp-optimize-utils.php

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1	<?php
2
3	if (!defined('ABSPATH')) die('Access denied.');
4
5	if (!class_exists('WP_Optimize_Utils')) :
6
7	class WP_Optimize_Utils {
8
9	/**
10	* Returns the folder path for log files
11	*
12	* @return string - Folder path for log files with trailing slash
13	*/
14	public static function get_log_folder_path() {
15	$upload_base = self::get_base_upload_dir();
16	if (!is_dir($upload_base . 'wpo/logs')) {
17	wp_mkdir_p($upload_base . 'wpo/logs');
18	}
19	return $upload_base . 'wpo/logs/';
20	}
21
22	/**
23	* Generates a log file name based on the given prefix.
24	*
25	* @param string $prefix The prefix to be added to the log file name.
26	* @return string The generated log file name.
27	*/
28	public static function get_log_file_name($prefix) {
29	return $prefix . '-' . substr(md5(wp_salt()), 0, 20) . '.log';
30	}
31
32	/**
33	* Returns the file path for the log file.
34	*
35	* @param string $prefix The prefix to be added to the log file name.
36	* @return string The file path for the log file.
37	*/
38	public static function get_log_file_path($prefix) {
39	return self::get_log_folder_path() . self::get_log_file_name($prefix);
40	}
41
42	/**
43	* Returns WordPress GMT offset in seconds.
44	*
45	* @return int
46	*/
47	public static function get_gmt_offset() {
48	$timezone_string = get_option('timezone_string');
49
50	if (!empty($timezone_string)) {
51	$timezone = new DateTimeZone($timezone_string);
52	$gmt_offset = $timezone->getOffset(new DateTime());
53	} else {
54	$gmt_offset_option = get_option('gmt_offset');
55	$gmt_offset = (int) (3600 * $gmt_offset_option);
56	}
57
58	return $gmt_offset;
59	}
60
61	/**
62	* Returns the folder path for the upload directory with trailing slash
63	*
64	* @return string - Folder path for the upload directory with trailing slash
65	*/
66	public static function get_base_upload_dir() {
67	$upload_dir = wp_upload_dir();
68	return trailingslashit($upload_dir['basedir']);
69	}
70
71	/**
72	* Get the file path
73	*
74	* @param string $url
75	* @return string
76	*/
77	public static function get_file_path($url) {
78	if (is_multisite()) {
79	if (function_exists('get_main_site_id')) {
80	$site_id = get_main_site_id();
81	} else {
82	$network = get_network();
83	$site_id = $network->site_id;
84	}
85	switch_to_blog($site_id);
86	}
87	$upload_dir = wp_upload_dir();
88	$uploads_url = trailingslashit($upload_dir['baseurl']);
89	$uploads_dir = trailingslashit($upload_dir['basedir']);
90	if (is_multisite()) {
91	restore_current_blog();
92	}
93	$possible_urls = array(
94	WP_CONTENT_URL => WP_CONTENT_DIR,
95	WP_PLUGIN_URL => WP_PLUGIN_DIR,
96	$uploads_url => $uploads_dir,
97	get_template_directory_uri() => get_template_directory(),
98	untrailingslashit(includes_url()) => ABSPATH . WPINC,
99	);
100	$file = '';
101	foreach ($possible_urls as $possible_url => $path) {
102	$pos = strpos($url, $possible_url);
103	if (0 === $pos) {
104	$file = substr_replace($url, $path, $pos, strlen($possible_url));
105	break;
106	}
107	}
108	return $file;
109	}
110
111	/**
112	* Parse tag attributes and return array with them.
113	*
114	* @param string $tag
115	* @return array
116	*/
117	public static function parse_attributes($tag) {
118	$attributes = array();
119
120	$_attributes = wp_kses_hair($tag, wp_allowed_protocols());
121
122	if (empty($_attributes)) return $attributes;
123
124	foreach ($_attributes as $key => $value) {
125	$attributes[$key] = $value['value'];
126	}
127
128	return $attributes;
129	}
130
131	/**
132	* Checks whether supplied string is a valid html document or not
133	*
134	* @param string $html - HTML document as string
135	* @return bool
136	*/
137	public static function is_valid_html($html) {
138	if (is_feed()) return false;
139
140	// To prevent issue with `simple_html_dom` class
141	// Exit if it doesn't look like HTML
142	// https://github.com/rosell-dk/webp-express/issues/228
143	if (!preg_match("#^\\s*<#", $html)) return false;
144
145	if ('' === $html) return false;
146	return true;
147	}
148
149	/**
150	* Include simple html dom script if not available
151	*/
152	public static function maybe_include_simple_html_dom() {
153	if (!function_exists('str_get_html')) {
154	require_once WPO_PLUGIN_MAIN_PATH . 'vendor/simplehtmldom/simplehtmldom/simple_html_dom.php';
155	}
156	}
157
158	/**
159	* Returns simplehtmldom\HtmlDocument object
160	*
161	* @param string $html_buffer - HTML document as string
162	* @return simplehtmldom\HtmlDocument \| boolean
163	*/
164	public static function get_simple_html_dom_object($html_buffer) {
165	self::maybe_include_simple_html_dom();
166	return str_get_html($html_buffer, false, false,
167	get_option('blog_charset'), false, DEFAULT_BR_TEXT,
168	DEFAULT_SPAN_TEXT, false);
169	}
170	}
171
172	endif;
173