retro.php — Strong Testimonials trunk

strong-testimonials / includes / retro.php

strong-testimonials / includes Last commit date

retro.php

139 lines

1	<?php
2
3	if ( ! function_exists( 'get_preview_post_link' ) ) :
4
5	/**
6	* Retrieves the URL used for the post preview.
7	*
8	* Allows additional query args to be appended.
9	*
10	* @since 4.4.0
11	*
12	* @param int\|WP_Post $post Optional. Post ID or `WP_Post` object. Defaults to global `$post`.
13	* @param array $query_args Optional. Array of additional query args to be appended to the link.
14	* Default empty array.
15	* @param string $preview_link Optional. Base preview link to be used if it should differ from the
16	* post permalink. Default empty.
17	* @return string\|null URL used for the post preview, or null if the post does not exist.
18	*/
19	function get_preview_post_link( $post = null, $query_args = array(), $preview_link = '' ) {
20	$post = get_post( $post );
21	if ( ! $post ) {
22	return;
23	}
24
25	$post_type_object = get_post_type_object( $post->post_type );
26	if ( is_post_type_viewable( $post_type_object ) ) {
27	if ( ! $preview_link ) {
28	$preview_link = set_url_scheme( get_permalink( $post ) );
29	}
30
31	$query_args['preview'] = 'true';
32	$preview_link = add_query_arg( $query_args, $preview_link );
33	}
34
35	/**
36	* Filters the URL used for a post preview.
37	*
38	* @since 2.0.5
39	* @since 4.0.0 Added the `$post` parameter.
40	*
41	* @param string $preview_link URL used for the post preview.
42	* @param WP_Post $post Post object.
43	*/
44	return apply_filters( 'preview_post_link', $preview_link, $post );
45	}
46
47	endif;
48
49
50	if ( ! function_exists( 'is_post_type_viewable' ) ) :
51
52	/**
53	* Determines whether a post type is considered "viewable".
54	*
55	* For built-in post types such as posts and pages, the 'public' value will be evaluated.
56	* For all others, the 'publicly_queryable' value will be used.
57	*
58	* @since 4.4.0
59	* @since 4.5.0 Added the ability to pass a post type name in addition to object.
60	* @since 4.6.0 Converted the `$post_type` parameter to accept a WP_Post_Type object.
61	*
62	* @param string\|WP_Post_Type $post_type Post type name or object.
63	* @return bool Whether the post type should be considered viewable.
64	*/
65	function is_post_type_viewable( $post_type ) {
66	if ( is_scalar( $post_type ) ) {
67	$post_type = get_post_type_object( $post_type );
68	if ( ! $post_type ) {
69	return false;
70	}
71	}
72
73	return $post_type->publicly_queryable \|\| ( $post_type->_builtin && $post_type->public );
74	}
75
76	endif;
77
78
79	/**
80	* wp_make_content_images_responsive in WP 4.4.0+
81	*/
82	if ( ! function_exists( 'wp_make_content_images_responsive' ) ) :
83
84	function wp_make_content_images_responsive( $content ) {
85	return $content;
86	}
87
88	endif;
89
90
91	if ( ! function_exists( 'wp_doing_ajax' ) ) :
92
93	/**
94	* Determines whether the current request is a WordPress Ajax request.
95	*
96	* @since 4.7.0
97	*
98	* @return bool True if it's a WordPress Ajax request, false otherwise.
99	*/
100	function wp_doing_ajax() {
101	/**
102	* Filters whether the current request is a WordPress Ajax request.
103	*
104	* @since 4.7.0
105	*
106	* @param bool $wp_doing_ajax Whether the current request is a WordPress Ajax request.
107	*/
108	return apply_filters( 'wp_doing_ajax', defined( 'DOING_AJAX' ) && DOING_AJAX );
109	}
110
111	endif;
112
113
114	if ( ! function_exists( 'sanitize_hex_color' ) ) :
115
116	/**
117	* Sanitizes a hex color.
118	*
119	* Returns either '', a 3 or 6 digit hex color (with #), or nothing.
120	* For sanitizing values without a #, see sanitize_hex_color_no_hash().
121	*
122	* @since 3.4.0
123	*
124	* @param string $color
125	* @return string\|void
126	*/
127	function sanitize_hex_color( $color ) {
128	if ( '' === $color ) {
129	return '';
130	}
131
132	// 3 or 6 hex digits, or the empty string.
133	if ( preg_match( '\|^#([A-Fa-f0-9]{3}){1,2}$\|', $color ) ) {
134	return $color;
135	}
136	}
137
138	endif;
139