elementor / includes / utils.php

utils.php in Elementor Website Builder – more than just a page builder 3.20.4, at includes/utils.php

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1	<?php
2	namespace Elementor;
3
4	use Elementor\Core\Utils\Collection;
5
6	if ( ! defined( 'ABSPATH' ) ) {
7	exit; // Exit if accessed directly.
8	}
9
10	/**
11	* Elementor utils.
12	*
13	* Elementor utils handler class is responsible for different utility methods
14	* used by Elementor.
15	*
16	* @since 1.0.0
17	*/
18	class Utils {
19
20	const DEPRECATION_RANGE = 0.4;
21
22	const EDITOR_BREAK_LINES_OPTION_KEY = 'elementor_editor_break_lines';
23
24	/**
25	* A list of safe tage for `validate_html_tag` method.
26	*/
27	const ALLOWED_HTML_WRAPPER_TAGS = [
28	'a',
29	'article',
30	'aside',
31	'button',
32	'div',
33	'footer',
34	'h1',
35	'h2',
36	'h3',
37	'h4',
38	'h5',
39	'h6',
40	'header',
41	'main',
42	'nav',
43	'p',
44	'section',
45	'span',
46	];
47
48	const EXTENDED_ALLOWED_HTML_TAGS = [
49	'iframe' => [
50	'iframe' => [
51	'allow' => true,
52	'allowfullscreen' => true,
53	'frameborder' => true,
54	'height' => true,
55	'loading' => true,
56	'name' => true,
57	'referrerpolicy' => true,
58	'sandbox' => true,
59	'src' => true,
60	'width' => true,
61	],
62	],
63	'svg' => [
64	'svg' => [
65	'aria-hidden' => true,
66	'aria-labelledby' => true,
67	'class' => true,
68	'height' => true,
69	'role' => true,
70	'viewbox' => true,
71	'width' => true,
72	'xmlns' => true,
73	],
74	'g' => [
75	'fill' => true,
76	],
77	'title' => [
78	'title' => true,
79	],
80	'path' => [
81	'd' => true,
82	'fill' => true,
83	],
84	],
85	'image' => [
86	'img' => [
87	'srcset' => true,
88	'sizes' => true,
89	],
90	],
91	];
92
93	/**
94	* Is WP CLI.
95	*
96	* @return bool
97	*/
98	public static function is_wp_cli() {
99	return defined( 'WP_CLI' ) && WP_CLI;
100	}
101
102	/**
103	* Is script debug.
104	*
105	* Whether script debug is enabled or not.
106	*
107	* @since 1.0.0
108	* @access public
109	* @static
110	*
111	* @return bool True if it's a script debug is active, false otherwise.
112	*/
113	public static function is_script_debug() {
114	return defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG;
115	}
116
117	/**
118	* Whether elementor test mode is enabled or not.
119	*
120	* @return bool
121	*/
122	public static function is_elementor_tests() {
123	return defined( 'ELEMENTOR_TESTS' ) && ELEMENTOR_TESTS;
124	}
125
126	/**
127	* Get pro link.
128	*
129	* Retrieve the link to Elementor Pro.
130	*
131	* @since 1.7.0
132	* @access public
133	* @static
134	*
135	* @param string $link URL to Elementor pro.
136	*
137	* @return string Elementor pro link.
138	*/
139	public static function get_pro_link( $link ) {
140	static $theme_name = false;
141
142	if ( ! $theme_name ) {
143	$theme_obj = wp_get_theme();
144	if ( $theme_obj->parent() ) {
145	$theme_name = $theme_obj->parent()->get( 'Name' );
146	} else {
147	$theme_name = $theme_obj->get( 'Name' );
148	}
149
150	$theme_name = sanitize_key( $theme_name );
151	}
152
153	$link = add_query_arg( 'utm_term', $theme_name, $link );
154
155	return $link;
156	}
157
158	/**
159	* Replace URLs.
160	*
161	* Replace old URLs to new URLs. This method also updates all the Elementor data.
162	*
163	* @since 2.1.0
164	* @static
165	* @access public
166	*
167	* @param $from
168	* @param $to
169	*
170	* @return string
171	* @throws \Exception
172	*/
173	public static function replace_urls( $from, $to ) {
174	$from = trim( $from );
175	$to = trim( $to );
176
177	if ( empty( $from ) ) {
178	throw new \Exception( 'Couldn’t replace your address because the old URL was not provided. Try again by entering the old URL.' );
179	}
180
181	if ( empty( $to ) ) {
182	throw new \Exception( 'Couldn’t replace your address because the new URL was not provided. Try again by entering the new URL.' );
183	}
184
185	if ( $from === $to ) {
186	throw new \Exception( 'Couldn’t replace your address because both of the URLs provided are identical. Try again by entering different URLs.' );
187	}
188
189	$is_valid_urls = ( filter_var( $from, FILTER_VALIDATE_URL ) && filter_var( $to, FILTER_VALIDATE_URL ) );
190
191	if ( ! $is_valid_urls ) {
192	throw new \Exception( 'Couldn’t replace your address because at least one of the URLs provided are invalid. Try again by entering valid URLs.' );
193	}
194
195	global $wpdb;
196	$escaped_from = str_replace( '/', '\\/', $from );
197	$escaped_to = str_replace( '/', '\\/', $to );
198	$meta_value_like = '[%'; // meta_value LIKE '[%' are json formatted
199
200	$rows_affected = $wpdb->query(
201	$wpdb->prepare(
202	"UPDATE {$wpdb->postmeta} " .
203	'SET `meta_value` = REPLACE(`meta_value`, %s, %s) ' .
204	"WHERE `meta_key` = '_elementor_data' AND `meta_value` LIKE %s;",
205	$escaped_from,
206	$escaped_to,
207	$meta_value_like
208	)
209	);
210
211	if ( false === $rows_affected ) {
212	throw new \Exception( 'An error occurred while replacing URL\'s.' );
213	}
214
215	// Allow externals to replace-urls, when they have to.
216	$rows_affected += (int) apply_filters( 'elementor/tools/replace-urls', 0, $from, $to );
217
218	Plugin::$instance->files_manager->clear_cache();
219
220	return sprintf(
221	/* translators: %d: Number of rows. */
222	_n( '%d database row affected.', '%d database rows affected.', $rows_affected, 'elementor' ),
223	$rows_affected
224	);
225	}
226
227	/**
228	* Is post supports Elementor.
229	*
230	* Whether the post supports editing with Elementor.
231	*
232	* @since 1.0.0
233	* @access public
234	* @static
235	*
236	* @param int $post_id Optional. Post ID. Default is `0`.
237	*
238	* @return string True if post supports editing with Elementor, false otherwise.
239	*/
240	public static function is_post_support( $post_id = 0 ) {
241	$post_type = get_post_type( $post_id );
242
243	$is_supported = self::is_post_type_support( $post_type );
244
245	/**
246	* Is post type support.
247	*
248	* Filters whether the post type supports editing with Elementor.
249	*
250	* @since 1.0.0
251	* @deprecated 2.2.0 Use `elementor/utils/is_post_support` hook Instead.
252	*
253	* @param bool $is_supported Whether the post type supports editing with Elementor.
254	* @param int $post_id Post ID.
255	* @param string $post_type Post type.
256	*/
257	$is_supported = apply_filters( 'elementor/utils/is_post_type_support', $is_supported, $post_id, $post_type );
258
259	/**
260	* Is post support.
261	*
262	* Filters whether the post supports editing with Elementor.
263	*
264	* @since 2.2.0
265	*
266	* @param bool $is_supported Whether the post type supports editing with Elementor.
267	* @param int $post_id Post ID.
268	* @param string $post_type Post type.
269	*/
270	$is_supported = apply_filters( 'elementor/utils/is_post_support', $is_supported, $post_id, $post_type );
271
272	return $is_supported;
273	}
274
275
276	/**
277	* Is post type supports Elementor.
278	*
279	* Whether the post type supports editing with Elementor.
280	*
281	* @since 2.2.0
282	* @access public
283	* @static
284	*
285	* @param string $post_type Post Type.
286	*
287	* @return string True if post type supports editing with Elementor, false otherwise.
288	*/
289	public static function is_post_type_support( $post_type ) {
290	if ( ! post_type_exists( $post_type ) ) {
291	return false;
292	}
293
294	if ( ! post_type_supports( $post_type, 'elementor' ) ) {
295	return false;
296	}
297
298	return true;
299	}
300
301	/**
302	* Get placeholder image source.
303	*
304	* Retrieve the source of the placeholder image.
305	*
306	* @since 1.0.0
307	* @access public
308	* @static
309	*
310	* @return string The source of the default placeholder image used by Elementor.
311	*/
312	public static function get_placeholder_image_src() {
313	$placeholder_image = ELEMENTOR_ASSETS_URL . 'images/placeholder.png';
314
315	/**
316	* Get placeholder image source.
317	*
318	* Filters the source of the default placeholder image used by Elementor.
319	*
320	* @since 1.0.0
321	*
322	* @param string $placeholder_image The source of the default placeholder image.
323	*/
324	$placeholder_image = apply_filters( 'elementor/utils/get_placeholder_image_src', $placeholder_image );
325
326	return $placeholder_image;
327	}
328
329	/**
330	* Generate random string.
331	*
332	* Returns a string containing a hexadecimal representation of random number.
333	*
334	* @since 1.0.0
335	* @access public
336	* @static
337	*
338	* @return string Random string.
339	*/
340	public static function generate_random_string() {
341	return dechex( rand() );
342	}
343
344	/**
345	* Do not cache.
346	*
347	* Tell WordPress cache plugins not to cache this request.
348	*
349	* @since 1.0.0
350	* @access public
351	* @static
352	*/
353	public static function do_not_cache() {
354	if ( ! defined( 'DONOTCACHEPAGE' ) ) {
355	define( 'DONOTCACHEPAGE', true );
356	}
357
358	if ( ! defined( 'DONOTCACHEDB' ) ) {
359	define( 'DONOTCACHEDB', true );
360	}
361
362	if ( ! defined( 'DONOTMINIFY' ) ) {
363	define( 'DONOTMINIFY', true );
364	}
365
366	if ( ! defined( 'DONOTCDN' ) ) {
367	define( 'DONOTCDN', true );
368	}
369
370	if ( ! defined( 'DONOTCACHEOBJECT' ) ) {
371	define( 'DONOTCACHEOBJECT', true );
372	}
373
374	// Set the headers to prevent caching for the different browsers.
375	nocache_headers();
376	}
377
378	/**
379	* Get timezone string.
380	*
381	* Retrieve timezone string from the WordPress database.
382	*
383	* @since 1.0.0
384	* @access public
385	* @static
386	*
387	* @return string Timezone string.
388	*/
389	public static function get_timezone_string() {
390	$current_offset = (float) get_option( 'gmt_offset' );
391	$timezone_string = get_option( 'timezone_string' );
392
393	// Create a UTC+- zone if no timezone string exists.
394	if ( empty( $timezone_string ) ) {
395	if ( $current_offset < 0 ) {
396	$timezone_string = 'UTC' . $current_offset;
397	} else {
398	$timezone_string = 'UTC+' . $current_offset;
399	}
400	}
401
402	return $timezone_string;
403	}
404
405	/**
406	* Get create new post URL.
407	*
408	* Retrieve a custom URL for creating a new post/page using Elementor.
409	*
410	* @since 1.9.0
411	* @access public
412	* @deprecated 3.3.0 Use `Plugin::$instance->documents->get_create_new_post_url()` instead.
413	* @static
414	*
415	* @param string $post_type Optional. Post type slug. Default is 'page'.
416	* @param string\|null $template_type Optional. Query arg 'template_type'. Default is null.
417	*
418	* @return string A URL for creating new post using Elementor.
419	*/
420	public static function get_create_new_post_url( $post_type = 'page', $template_type = null ) {
421	Plugin::$instance->modules_manager->get_modules( 'dev-tools' )->deprecation->deprecated_function( __FUNCTION__, '3.3.0', 'Plugin::$instance->documents->get_create_new_post_url()' );
422
423	return Plugin::$instance->documents->get_create_new_post_url( $post_type, $template_type );
424	}
425
426	/**
427	* Get post autosave.
428	*
429	* Retrieve an autosave for any given post.
430	*
431	* @since 1.9.2
432	* @access public
433	* @static
434	*
435	* @param int $post_id Post ID.
436	* @param int $user_id Optional. User ID. Default is `0`.
437	*
438	* @return \WP_Post\|false Post autosave or false.
439	*/
440	public static function get_post_autosave( $post_id, $user_id = 0 ) {
441	global $wpdb;
442
443	$post = get_post( $post_id );
444
445	$where = $wpdb->prepare( 'post_parent = %d AND post_name LIKE %s AND post_modified_gmt > %s', [ $post_id, "{$post_id}-autosave%", $post->post_modified_gmt ] );
446
447	if ( $user_id ) {
448	$where .= $wpdb->prepare( ' AND post_author = %d', $user_id );
449	}
450
451	$revision = $wpdb->get_row( "SELECT * FROM $wpdb->posts WHERE $where AND post_type = 'revision'" ); // phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared
452
453	if ( $revision ) {
454	$revision = new \WP_Post( $revision );
455	} else {
456	$revision = false;
457	}
458
459	return $revision;
460	}
461
462	/**
463	* Is CPT supports custom templates.
464	*
465	* Whether the Custom Post Type supports templates.
466	*
467	* @since 2.0.0
468	* @access public
469	* @static
470	*
471	* @return bool True is templates are supported, False otherwise.
472	*/
473	public static function is_cpt_custom_templates_supported() {
474	require_once ABSPATH . '/wp-admin/includes/theme.php';
475
476	return method_exists( wp_get_theme(), 'get_post_templates' );
477	}
478
479	/**
480	* @since 2.1.2
481	* @access public
482	* @static
483	*/
484	public static function array_inject( $array, $key, $insert ) {
485	$length = array_search( $key, array_keys( $array ), true ) + 1;
486
487	return array_slice( $array, 0, $length, true ) +
488	$insert +
489	array_slice( $array, $length, null, true );
490	}
491
492	/**
493	* Render html attributes
494	*
495	* @access public
496	* @static
497	* @param array $attributes
498	*
499	* @return string
500	*/
501	public static function render_html_attributes( array $attributes ) {
502	$rendered_attributes = [];
503
504	foreach ( $attributes as $attribute_key => $attribute_values ) {
505	if ( is_array( $attribute_values ) ) {
506	$attribute_values = implode( ' ', $attribute_values );
507	}
508
509	$rendered_attributes[] = sprintf( '%1$s="%2$s"', $attribute_key, esc_attr( $attribute_values ) );
510	}
511
512	return implode( ' ', $rendered_attributes );
513	}
514
515	/**
516	* Safe print html attributes
517	*
518	* @access public
519	* @static
520	* @param array $attributes
521	*/
522	public static function print_html_attributes( array $attributes ) {
523	// PHPCS - the method render_html_attributes is safe.
524	echo self::render_html_attributes( $attributes ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
525	}
526
527	public static function get_meta_viewport( $context = '' ) {
528	$meta_tag = '<meta name="viewport" content="width=device-width, initial-scale=1.0, viewport-fit=cover" />';
529
530	/**
531	* Viewport meta tag.
532	*
533	* Filters the meta tag containing the viewport information.
534	*
535	* This hook can be used to change the intial viewport meta tag set by Elementor
536	* and replace it with a different viewport tag.
537	*
538	* @since 2.5.0
539	*
540	* @param string $meta_tag Viewport meta tag.
541	* @param string $context Page context.
542	*/
543	$meta_tag = apply_filters( 'elementor/template/viewport_tag', $meta_tag, $context );
544
545	return $meta_tag;
546	}
547
548	/**
549	* Add Elementor Config js vars to the relevant script handle,
550	* WP will wrap it with <script> tag.
551	* To make sure this script runs thru the `script_loader_tag` hook, use a known handle value.
552	* @param string $handle
553	* @param string $js_var
554	* @param mixed $config
555	*/
556	public static function print_js_config( $handle, $js_var, $config ) {
557	$config = wp_json_encode( $config );
558
559	if ( get_option( self::EDITOR_BREAK_LINES_OPTION_KEY ) ) {
560	// Add new lines to avoid memory limits in some hosting servers that handles the buffer output according to new line characters
561	$config = str_replace( '}},"', '}},' . PHP_EOL . '"', $config );
562	}
563
564	$script_data = 'var ' . $js_var . ' = ' . $config . ';';
565
566	wp_add_inline_script( $handle, $script_data, 'before' );
567	}
568
569	public static function handle_deprecation( $item, $version, $replacement = null ) {
570	preg_match( '/^[0-9]+\.[0-9]+/', ELEMENTOR_VERSION, $current_version );
571
572	$current_version_as_float = (float) $current_version[0];
573
574	preg_match( '/^[0-9]+\.[0-9]+/', $version, $alias_version );
575
576	$alias_version_as_float = (float) $alias_version[0];
577
578	if ( round( $current_version_as_float - $alias_version_as_float, 1 ) >= self::DEPRECATION_RANGE ) {
579	_deprecated_file( $item, $version, $replacement ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
580	}
581	}
582
583	/**
584	* Checks a control value for being empty, including a string of '0' not covered by PHP's empty().
585	*
586	* @param mixed $source
587	* @param bool\|string $key
588	*
589	* @return bool
590	*/
591	public static function is_empty( $source, $key = false ) {
592	if ( is_array( $source ) ) {
593	if ( ! isset( $source[ $key ] ) ) {
594	return true;
595	}
596
597	$source = $source[ $key ];
598	}
599
600	return '0' !== $source && empty( $source );
601	}
602
603	public static function has_pro() {
604	return defined( 'ELEMENTOR_PRO_VERSION' );
605	}
606
607	/**
608	* Convert HTMLEntities to UTF-8 characters
609	*
610	* @param $string
611	* @return string
612	*/
613	public static function urlencode_html_entities( $string ) {
614	$entities_dictionary = [
615	'' => "'", // Opening single quote
616	'' => "'", // Closing single quote
617	'' => '"', // Closing double quote
618	'' => '"', // Opening double quote
619	'‘' => "'", // Closing single quote
620	'’' => "'", // Opening single quote
621	'‚' => "'", // Single low quote
622	'“' => '"', // Closing double quote
623	'”' => '"', // Opening double quote
624	'„' => '"', // Double low quote
625	];
626
627	// Decode decimal entities
628	$string = str_replace( array_keys( $entities_dictionary ), array_values( $entities_dictionary ), $string );
629
630	return rawurlencode( html_entity_decode( $string, ENT_QUOTES \| ENT_HTML5, 'UTF-8' ) );
631	}
632
633	/**
634	* Parse attributes that come as a string of comma-delimited key\|value pairs.
635	* Removes Javascript events and unescaped `href` attributes.
636	*
637	* @param string $attributes_string
638	*
639	* @param string $delimiter Default comma `,`.
640	*
641	* @return array
642	*/
643	public static function parse_custom_attributes( $attributes_string, $delimiter = ',' ) {
644	$attributes = explode( $delimiter, $attributes_string );
645	$result = [];
646
647	foreach ( $attributes as $attribute ) {
648	$attr_key_value = explode( '\|', $attribute );
649
650	$attr_key = mb_strtolower( $attr_key_value[0] );
651
652	// Remove any not allowed characters.
653	preg_match( '/[-_a-z0-9]+/', $attr_key, $attr_key_matches );
654
655	if ( empty( $attr_key_matches[0] ) ) {
656	continue;
657	}
658
659	$attr_key = $attr_key_matches[0];
660
661	// Avoid Javascript events and unescaped href.
662	if ( 'href' === $attr_key \|\| 'on' === substr( $attr_key, 0, 2 ) ) {
663	continue;
664	}
665
666	if ( isset( $attr_key_value[1] ) ) {
667	$attr_value = trim( $attr_key_value[1] );
668	} else {
669	$attr_value = '';
670	}
671
672	$result[ $attr_key ] = $attr_value;
673	}
674
675	return $result;
676	}
677
678	public static function find_element_recursive( $elements, $id ) {
679	foreach ( $elements as $element ) {
680	if ( $id === $element['id'] ) {
681	return $element;
682	}
683
684	if ( ! empty( $element['elements'] ) ) {
685	$element = self::find_element_recursive( $element['elements'], $id );
686
687	if ( $element ) {
688	return $element;
689	}
690	}
691	}
692
693	return false;
694	}
695
696	/**
697	* Change Submenu First Item Label
698	*
699	* Overwrite the label of the first submenu item of an admin menu item.
700	*
701	* Fired by `admin_menu` action.
702	*
703	* @since 3.1.0
704	*
705	* @param $menu_slug
706	* @param $new_label
707	* @access public
708	*/
709	public static function change_submenu_first_item_label( $menu_slug, $new_label ) {
710	global $submenu;
711
712	if ( isset( $submenu[ $menu_slug ] ) ) {
713	// @codingStandardsIgnoreStart
714	$submenu[ $menu_slug ][0][0] = $new_label;
715	// @codingStandardsIgnoreEnd
716	}
717	}
718
719	/**
720	* Validate an HTML tag against a safe allowed list.
721	*
722	* @param string $tag
723	*
724	* @return string
725	*/
726	public static function validate_html_tag( $tag ) {
727	return $tag && in_array( strtolower( $tag ), self::ALLOWED_HTML_WRAPPER_TAGS ) ? $tag : 'div';
728	}
729
730	/**
731	* Safe print a validated HTML tag.
732	*
733	* @param string $tag
734	*/
735	public static function print_validated_html_tag( $tag ) {
736	// PHPCS - the method validate_html_tag is safe.
737	echo self::validate_html_tag( $tag ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
738	}
739
740	/**
741	* Print internal content (not user input) without escaping.
742	*/
743	public static function print_unescaped_internal_string( $string ) {
744	echo $string; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
745	}
746
747	/**
748	* Get recently edited posts query.
749	*
750	* Returns `WP_Query` of the recent edited posts.
751	* By default max posts ( $args['posts_per_page'] ) is 3.
752	*
753	* @param array $args
754	*
755	* @return \WP_Query
756	*/
757	public static function get_recently_edited_posts_query( $args = [] ) {
758	$args = wp_parse_args( $args, [
759	'no_found_rows' => true,
760	'post_type' => 'any',
761	'post_status' => [ 'publish', 'draft' ],
762	'posts_per_page' => '3',
763	'meta_key' => '_elementor_edit_mode',
764	'meta_value' => 'builder',
765	'orderby' => 'modified',
766	] );
767
768	return new \WP_Query( $args );
769	}
770
771	public static function print_wp_kses_extended( $string, array $tags ) {
772	$allowed_html = wp_kses_allowed_html( 'post' );
773
774	foreach ( $tags as $tag ) {
775	if ( isset( self::EXTENDED_ALLOWED_HTML_TAGS[ $tag ] ) ) {
776	$extended_tags = apply_filters( "elementor/extended_allowed_html_tags/{$tag}", self::EXTENDED_ALLOWED_HTML_TAGS[ $tag ] );
777	$allowed_html = array_replace_recursive( $allowed_html, $extended_tags );
778	}
779	}
780
781	echo wp_kses( $string, $allowed_html );
782	}
783
784	public static function is_elementor_path( $path ) {
785	$path = wp_normalize_path( $path );
786
787	/**
788	* Elementor related paths.
789	*
790	* Filters Elementor related paths.
791	*
792	* @param string[] $available_paths
793	*/
794	$available_paths = apply_filters( 'elementor/utils/elementor_related_paths', [ ELEMENTOR_PATH ] );
795
796	return (bool) ( new Collection( $available_paths ) )
797	->map( function ( $p ) {
798	// `untrailingslashit` in order to include other plugins prefixed with elementor.
799	return untrailingslashit( wp_normalize_path( $p ) );
800	} )
801	->find(function ( $p ) use ( $path ) {
802	return false !== strpos( $path, $p );
803	} );
804	}
805
806	/**
807	* @param $file
808	* @param mixed ...$args
809	* @return false\|string
810	*/
811	public static function file_get_contents( $file, ...$args ) {
812	if ( ! is_file( $file ) \|\| ! is_readable( $file ) ) {
813	return false;
814	}
815
816	return file_get_contents( $file, ...$args );
817	}
818
819	public static function get_super_global_value( $super_global, $key ) {
820	if ( ! isset( $super_global[ $key ] ) ) {
821	return null;
822	}
823
824	if ( $_FILES === $super_global ) {
825	return isset( $super_global[ $key ]['name'] ) ?
826	self::sanitize_file_name( $super_global[ $key ] ) :
827	self::sanitize_multi_upload( $super_global[ $key ] );
828	}
829
830	return wp_kses_post_deep( wp_unslash( $super_global[ $key ] ) );
831	}
832
833	private static function sanitize_multi_upload( $fields ) {
834	return array_map( function( $field ) {
835	return array_map( 'self::sanitize_file_name', $field );
836	}, $fields );
837	}
838
839	private static function sanitize_file_name( $file ) {
840	$file['name'] = sanitize_file_name( $file['name'] );
841
842	return $file;
843	}
844
845	/**
846	* Return specific object property value if exist from array of keys.
847	*
848	* @param $array
849	* @param $keys
850	* @return key\|false
851	*/
852	public static function get_array_value_by_keys( $array, $keys ) {
853	$keys = (array) $keys;
854	foreach ( $keys as $key ) {
855	if ( ! isset( $array[ $key ] ) ) {
856	return null;
857	}
858	$array = $array[ $key ];
859	}
860	return $array;
861	}
862
863	public static function get_cached_callback( $callback, $cache_key, $cache_time = 24 * HOUR_IN_SECONDS ) {
864	$cache = get_site_transient( $cache_key );
865
866	if ( ! $cache ) {
867	$cache = call_user_func( $callback );
868
869	if ( ! is_wp_error( $cache ) ) {
870	set_site_transient( $cache_key, $cache, $cache_time );
871	}
872	}
873
874	return $cache;
875	}
876	}
877