class.jetpack-post-images.php — Jetpack – WP Security, Backup, Speed, & Growth 7.4.1

jetpack / class.jetpack-post-images.php

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class.jetpack-post-images.php

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1	<?php
2
3	/**
4	* Useful for finding an image to display alongside/in representation of a specific post.
5	*
6	* Includes a few different methods, all of which return a similar-format array containing
7	* details of any images found. Everything can (should) be called statically, it's just a
8	* function-bucket. You can also call Jetpack_PostImages::get_image() to cycle through all of the methods until
9	* one of them finds something useful.
10	*
11	* This file is included verbatim in Jetpack
12	*/
13	class Jetpack_PostImages {
14	/**
15	* If a slideshow is embedded within a post, then parse out the images involved and return them
16	*/
17	static function from_slideshow( $post_id, $width = 200, $height = 200 ) {
18	$images = array();
19
20	$post = get_post( $post_id );
21
22	if ( ! $post ) {
23	return $images;
24	}
25
26	if ( ! empty( $post->post_password ) ) {
27	return $images;
28	}
29
30	if ( false === has_shortcode( $post->post_content, 'slideshow' ) ) {
31	return $images; // no slideshow - bail
32	}
33
34	$permalink = get_permalink( $post->ID );
35
36	// Mechanic: Somebody set us up the bomb
37	$old_post = $GLOBALS['post'];
38	$GLOBALS['post'] = $post;
39	$old_shortcodes = $GLOBALS['shortcode_tags'];
40	$GLOBALS['shortcode_tags'] = array( 'slideshow' => $old_shortcodes['slideshow'] );
41
42	// Find all the slideshows
43	preg_match_all( '/' . get_shortcode_regex() . '/sx', $post->post_content, $slideshow_matches, PREG_SET_ORDER );
44
45	ob_start(); // The slideshow shortcode handler calls wp_print_scripts and wp_print_styles... not too happy about that
46
47	foreach ( $slideshow_matches as $slideshow_match ) {
48	$slideshow = do_shortcode_tag( $slideshow_match );
49	if ( false === $pos = stripos( $slideshow, 'jetpack-slideshow' ) ) // must be something wrong - or we changed the output format in which case none of the following will work
50	continue;
51	$start = strpos( $slideshow, '[', $pos );
52	$end = strpos( $slideshow, ']', $start );
53	$post_images = json_decode( wp_specialchars_decode( str_replace( "'", '"', substr( $slideshow, $start, $end - $start + 1 ) ), ENT_QUOTES ) ); // parse via JSON
54	// If the JSON didn't decode don't try and act on it.
55	if ( is_array( $post_images ) ) {
56	foreach ( $post_images as $post_image ) {
57	if ( !$post_image_id = absint( $post_image->id ) )
58	continue;
59
60	$meta = wp_get_attachment_metadata( $post_image_id );
61
62	// Must be larger than 200x200 (or user-specified)
63	if ( !isset( $meta['width'] ) \|\| $meta['width'] < $width )
64	continue;
65	if ( !isset( $meta['height'] ) \|\| $meta['height'] < $height )
66	continue;
67
68	$url = wp_get_attachment_url( $post_image_id );
69
70	$images[] = array(
71	'type' => 'image',
72	'from' => 'slideshow',
73	'src' => $url,
74	'src_width' => $meta['width'],
75	'src_height' => $meta['height'],
76	'href' => $permalink,
77	);
78	}
79	}
80	}
81	ob_end_clean();
82
83	// Operator: Main screen turn on
84	$GLOBALS['shortcode_tags'] = $old_shortcodes;
85	$GLOBALS['post'] = $old_post;
86
87	return $images;
88	}
89
90	/**
91	* If a gallery is detected, then get all the images from it.
92	*/
93	static function from_gallery( $post_id ) {
94	$images = array();
95
96	$post = get_post( $post_id );
97
98	if ( ! $post ) {
99	return $images;
100	}
101
102	if ( ! empty( $post->post_password ) ) {
103	return $images;
104	}
105
106	$permalink = get_permalink( $post->ID );
107
108	/**
109	* Juggle global post object because the gallery shortcode uses the
110	* global object.
111	*
112	* See core ticket:
113	* https://core.trac.wordpress.org/ticket/39304
114	*/
115	if ( isset( $GLOBALS['post'] ) ) {
116	$juggle_post = $GLOBALS['post'];
117	$GLOBALS['post'] = $post;
118	$galleries = get_post_galleries( $post->ID, false );
119	$GLOBALS['post'] = $juggle_post;
120	} else {
121	$GLOBALS['post'] = $post;
122	$galleries = get_post_galleries( $post->ID, false );
123	unset( $GLOBALS['post'] );
124	}
125
126	foreach ( $galleries as $gallery ) {
127	if ( isset( $gallery['type'] ) && 'slideshow' === $gallery['type'] && ! empty( $gallery['ids'] ) ) {
128	$image_ids = explode( ',', $gallery['ids'] );
129	$image_size = isset( $gallery['size'] ) ? $gallery['size'] : 'thumbnail';
130	foreach ( $image_ids as $image_id ) {
131	$image = wp_get_attachment_image_src( $image_id, $image_size );
132	if ( ! empty( $image[0] ) ) {
133	list( $raw_src ) = explode( '?', $image[0] ); // pull off any Query string (?w=250)
134	$raw_src = wp_specialchars_decode( $raw_src ); // rawify it
135	$raw_src = esc_url_raw( $raw_src ); // clean it
136	$images[] = array(
137	'type' => 'image',
138	'from' => 'gallery',
139	'src' => $raw_src,
140	'href' => $permalink,
141	);
142	}
143	}
144	} elseif ( ! empty( $gallery['src'] ) ) {
145	foreach ( $gallery['src'] as $src ) {
146	list( $raw_src ) = explode( '?', $src ); // pull off any Query string (?w=250)
147	$raw_src = wp_specialchars_decode( $raw_src ); // rawify it
148	$raw_src = esc_url_raw( $raw_src ); // clean it
149	$images[] = array(
150	'type' => 'image',
151	'from' => 'gallery',
152	'src' => $raw_src,
153	'href' => $permalink,
154	);
155	}
156	}
157	}
158
159	return $images;
160	}
161
162	/**
163	* Get attachment images for a specified post and return them. Also make sure
164	* their dimensions are at or above a required minimum.
165	*/
166	static function from_attachment( $post_id, $width = 200, $height = 200 ) {
167	$images = array();
168
169	$post = get_post( $post_id );
170
171	if ( ! empty( $post->post_password ) ) {
172	return $images;
173	}
174
175	$post_images = get_posts( array(
176	'post_parent' => $post_id, // Must be children of post
177	'numberposts' => 5, // No more than 5
178	'post_type' => 'attachment', // Must be attachments
179	'post_mime_type' => 'image', // Must be images
180	'suppress_filters' => false,
181	) );
182
183	if ( ! $post_images ) {
184	return $images;
185	}
186
187	$permalink = get_permalink( $post_id );
188
189	foreach ( $post_images as $post_image ) {
190	$current_image = self::get_attachment_data( $post_image->ID, $permalink, $width, $height );
191	if ( false !== $current_image ) {
192	$images[] = $current_image;
193	}
194	}
195
196	/*
197	* We only want to pass back attached images that were actually inserted.
198	* We can load up all the images found in the HTML source and then
199	* compare URLs to see if an image is attached AND inserted.
200	*/
201	$html_images = self::from_html( $post_id );
202	$inserted_images = array();
203
204	foreach( $html_images as $html_image ) {
205	$src = parse_url( $html_image['src'] );
206	// strip off any query strings from src
207	if( ! empty( $src['scheme'] ) && ! empty( $src['host'] ) ) {
208	$inserted_images[] = $src['scheme'] . '://' . $src['host'] . $src['path'];
209	} elseif( ! empty( $src['host'] ) ) {
210	$inserted_images[] = set_url_scheme( 'http://' . $src['host'] . $src['path'] );
211	} else {
212	$inserted_images[] = site_url( '/' ) . $src['path'];
213	}
214	}
215	foreach( $images as $i => $image ) {
216	if ( !in_array( $image['src'], $inserted_images ) )
217	unset( $images[$i] );
218	}
219
220	return $images;
221	}
222
223	/**
224	* Check if a Featured Image is set for this post, and return it in a similar
225	* format to the other images?_from_*() methods.
226	* @param int $post_id The post ID to check
227	* @return Array containing details of the Featured Image, or empty array if none.
228	*/
229	static function from_thumbnail( $post_id, $width = 200, $height = 200 ) {
230	$images = array();
231
232	$post = get_post( $post_id );
233
234	if ( ! empty( $post->post_password ) ) {
235	return $images;
236	}
237
238	if ( 'attachment' === get_post_type( $post ) && wp_attachment_is_image( $post ) ) {
239	$thumb = $post_id;
240	} else {
241	$thumb = get_post_thumbnail_id( $post );
242	}
243
244	if ( $thumb ) {
245	$meta = wp_get_attachment_metadata( $thumb );
246	// Must be larger than requested minimums
247	if ( !isset( $meta['width'] ) \|\| $meta['width'] < $width )
248	return $images;
249	if ( !isset( $meta['height'] ) \|\| $meta['height'] < $height )
250	return $images;
251
252	$too_big = ( ( ! empty( $meta['width'] ) && $meta['width'] > 1200 ) \|\| ( ! empty( $meta['height'] ) && $meta['height'] > 1200 ) );
253
254	if (
255	$too_big &&
256	(
257	( method_exists( 'Jetpack', 'is_module_active' ) && Jetpack::is_module_active( 'photon' ) ) \|\|
258	( defined( 'IS_WPCOM' ) && IS_WPCOM )
259	)
260	) {
261	$img_src = wp_get_attachment_image_src( $thumb, array( 1200, 1200 ) );
262	} else {
263	$img_src = wp_get_attachment_image_src( $thumb, 'full' );
264	}
265	if ( ! is_array( $img_src ) ) {
266	// If wp_get_attachment_image_src returns false but we know that there should be an image that could be used.
267	// we try a bit harder and user the data that we have.
268	$thumb_post_data = get_post( $thumb );
269	$img_src = array( $thumb_post_data->guid, $meta['width'], $meta['height'] );
270	}
271
272	$url = $img_src[0];
273	$images = array( array( // Other methods below all return an array of arrays
274	'type' => 'image',
275	'from' => 'thumbnail',
276	'src' => $url,
277	'src_width' => $img_src[1],
278	'src_height' => $img_src[2],
279	'href' => get_permalink( $thumb ),
280	'alt_text' => self::get_alt_text( $thumb ),
281	) );
282
283	}
284
285	if ( empty( $images ) && ( defined( 'IS_WPCOM' ) && IS_WPCOM ) ) {
286	$meta_thumbnail = get_post_meta( $post_id, '_jetpack_post_thumbnail', true );
287	if ( ! empty( $meta_thumbnail ) ) {
288	if ( ! isset( $meta_thumbnail['width'] ) \|\| $meta_thumbnail['width'] < $width ) {
289	return $images;
290	}
291
292	if ( ! isset( $meta_thumbnail['height'] ) \|\| $meta_thumbnail['height'] < $height ) {
293	return $images;
294	}
295
296	$images = array( array( // Other methods below all return an array of arrays
297	'type' => 'image',
298	'from' => 'thumbnail',
299	'src' => $meta_thumbnail['URL'],
300	'src_width' => $meta_thumbnail['width'],
301	'src_height' => $meta_thumbnail['height'],
302	'href' => $meta_thumbnail['URL'],
303	'alt_text' => self::get_alt_text( $thumb ),
304	) );
305	}
306	}
307
308	return $images;
309	}
310
311	/**
312	* Get images from Gutenberg Image blocks.
313	*
314	* @since 6.9.0
315	*
316	* @param mixed $html_or_id The HTML string to parse for images, or a post id.
317	* @param int $width Minimum Image width.
318	* @param int $height Minimum Image height.
319	*/
320	public static function from_blocks( $html_or_id, $width = 200, $height = 200 ) {
321	$images = array();
322
323	$html_info = self::get_post_html( $html_or_id );
324
325	if ( empty( $html_info['html'] ) ) {
326	return $images;
327	}
328
329	// Look for block information in the HTML.
330	$blocks = parse_blocks( $html_info['html'] );
331	if ( empty( $blocks ) ) {
332	return $images;
333	}
334
335	foreach ( $blocks as $block ) {
336	/**
337	* Parse content from Core Image blocks.
338	* If it is an image block for an image hosted on our site, it will have an ID.
339	* If it does not have an ID, let `from_html` parse that content later,
340	* and extract an image if it has size parameters.
341	*/
342	if (
343	'core/image' === $block['blockName']
344	&& ! empty( $block['attrs']['id'] )
345	) {
346	$images[] = self::get_attachment_data( $block['attrs']['id'], $html_info['post_url'], $width, $height );
347	}
348
349	/**
350	* Parse content from Core Gallery blocks as well from Jetpack's Tiled Gallery and Slideshow blocks.
351	* Gallery blocks include the ID of each one of the images in the gallery.
352	*/
353	if ( in_array( $block['blockName'], array( 'core/gallery', 'jetpack/tiled-gallery', 'jetpack/slideshow' ) )
354	&& ! empty( $block['attrs']['ids'] )
355	) {
356	foreach ( $block['attrs']['ids'] as $img_id ) {
357	$images[] = self::get_attachment_data( $img_id, $html_info['post_url'], $width, $height );
358	}
359	}
360	}
361
362	/**
363	* Returning a filtered array because get_attachment_data returns false
364	* for unsuccessful attempts.
365	*/
366	return array_filter( $images );
367	}
368
369	/**
370	* Very raw -- just parse the HTML and pull out any/all img tags and return their src
371	*
372	* @param mixed $html_or_id The HTML string to parse for images, or a post id.
373	* @param int $width Minimum Image width.
374	* @param int $height Minimum Image height.
375	*
376	* @uses DOMDocument
377	*
378	* @return Array containing images
379	*/
380	static function from_html( $html_or_id, $width = 200, $height = 200 ) {
381	$images = array();
382
383	$html_info = self::get_post_html( $html_or_id );
384
385	if ( empty( $html_info['html'] ) ) {
386	return $images;
387	}
388
389	// Do not go any further if DOMDocument is disabled on the server.
390	if ( ! class_exists( 'DOMDocument' ) ) {
391	return $images;
392	}
393
394	// Let's grab all image tags from the HTML.
395	$dom_doc = new DOMDocument;
396
397	// The @ is not enough to suppress errors when dealing with libxml,
398	// we have to tell it directly how we want to handle errors.
399	libxml_use_internal_errors( true );
400	@$dom_doc->loadHTML( $html_info['html'] );
401	libxml_use_internal_errors( false );
402
403	$image_tags = $dom_doc->getElementsByTagName( 'img' );
404
405	// For each image Tag, make sure it can be added to the $images array, and add it.
406	foreach ( $image_tags as $image_tag ) {
407	$img_src = $image_tag->getAttribute( 'src' );
408
409	if ( empty( $img_src ) ) {
410	continue;
411	}
412
413	// Do not grab smiley images that were automatically created by WP when entering text smilies.
414	if ( stripos( $img_src, '/smilies/' ) ) {
415	continue;
416	}
417
418	$meta = array(
419	'width' => (int) $image_tag->getAttribute( 'width' ),
420	'height' => (int) $image_tag->getAttribute( 'height' ),
421	'alt_text' => $image_tag->getAttribute( 'alt' ),
422	);
423
424	/**
425	* Filters the switch to ignore minimum image size requirements. Can be used
426	* to add custom logic to image dimensions, like only enforcing one of the dimensions,
427	* or disabling it entirely.
428	*
429	* @since 6.4.0
430	*
431	* @param bool $ignore Should the image dimensions be ignored?
432	* @param array $meta Array containing image dimensions parsed from the markup.
433	*/
434	$ignore_dimensions = apply_filters( 'jetpack_postimages_ignore_minimum_dimensions', false, $meta );
435
436	// Must be larger than 200x200 (or user-specified).
437	if (
438	! $ignore_dimensions
439	&& (
440	empty( $meta['width'] )
441	\|\| empty( $meta['height'] )
442	\|\| $meta['width'] < $width
443	\|\| $meta['height'] < $height
444	)
445	) {
446	continue;
447	}
448
449	$images[] = array(
450	'type' => 'image',
451	'from' => 'html',
452	'src' => $img_src,
453	'src_width' => $meta['width'],
454	'src_height' => $meta['height'],
455	'href' => $html_info['post_url'],
456	'alt_text' => $meta['alt_text'],
457	);
458	}
459	return $images;
460	}
461
462	/**
463	* @param int $post_id The post ID to check
464	* @param int $size
465	* @return Array containing details of the image, or empty array if none.
466	*/
467	static function from_blavatar( $post_id, $size = 96 ) {
468
469	$permalink = get_permalink( $post_id );
470
471	if ( function_exists( 'blavatar_domain' ) && function_exists( 'blavatar_exists' ) && function_exists( 'blavatar_url' ) ) {
472	$domain = blavatar_domain( $permalink );
473
474	if ( ! blavatar_exists( $domain ) ) {
475	return array();
476	}
477
478	$url = blavatar_url( $domain, 'img', $size );
479	} else {
480	$url = get_site_icon_url( $size );
481	if ( ! $url ) {
482	return array();
483	}
484	}
485
486	return array( array(
487	'type' => 'image',
488	'from' => 'blavatar',
489	'src' => $url,
490	'src_width' => $size,
491	'src_height' => $size,
492	'href' => $permalink,
493	'alt_text' => '',
494	) );
495	}
496
497	/**
498	* Gets a post image from the author avatar.
499	*
500	* @param int $post_id The post ID to check.
501	* @param int $size The size of the avatar to get.
502	* @param string $default The default image to use.
503	* @return Array containing details of the image, or empty array if none.
504	*/
505	static function from_gravatar( $post_id, $size = 96, $default = false ) {
506	$post = get_post( $post_id );
507	$permalink = get_permalink( $post_id );
508
509	if ( function_exists( 'wpcom_get_avatar_url' ) ) {
510	$url = wpcom_get_avatar_url( $post->post_author, $size, $default, true );
511	if ( $url && is_array( $url ) ) {
512	$url = $url[0];
513	}
514	} else {
515	$url = get_avatar_url( $post->post_author, array(
516	'size' => $size,
517	'default' => $default,
518	) );
519	}
520
521	return array(
522	array(
523	'type' => 'image',
524	'from' => 'gravatar',
525	'src' => $url,
526	'src_width' => $size,
527	'src_height' => $size,
528	'href' => $permalink,
529	'alt_text' => '',
530	),
531	);
532	}
533
534	/**
535	* Run through the different methods that we have available to try to find a single good
536	* display image for this post.
537	* @param int $post_id
538	* @param array $args Other arguments (currently width and height required for images where possible to determine)
539	* @return Array containing details of the best image to be used
540	*/
541	static function get_image( $post_id, $args = array() ) {
542	$image = '';
543
544	/**
545	* Fires before we find a single good image for a specific post.
546	*
547	* @since 2.2.0
548	*
549	* @param int $post_id Post ID.
550	*/
551	do_action( 'jetpack_postimages_pre_get_image', $post_id );
552	$media = self::get_images( $post_id, $args );
553
554
555	if ( is_array( $media ) ) {
556	foreach ( $media as $item ) {
557	if ( 'image' == $item['type'] ) {
558	$image = $item;
559	break;
560	}
561	}
562	}
563
564	/**
565	* Fires after we find a single good image for a specific post.
566	*
567	* @since 2.2.0
568	*
569	* @param int $post_id Post ID.
570	*/
571	do_action( 'jetpack_postimages_post_get_image', $post_id );
572
573	return $image;
574	}
575
576	/**
577	* Get an array containing a collection of possible images for this post, stopping once we hit a method
578	* that returns something useful.
579	* @param int $post_id
580	* @param array $args Optional args, see defaults list for details
581	* @return Array containing images that would be good for representing this post
582	*/
583	static function get_images( $post_id, $args = array() ) {
584	// Figure out which image to attach to this post.
585	$media = false;
586
587	/**
588	* Filters the array of images that would be good for a specific post.
589	* This filter is applied before options ($args) filter the original array.
590	*
591	* @since 2.0.0
592	*
593	* @param array $media Array of images that would be good for a specific post.
594	* @param int $post_id Post ID.
595	* @param array $args Array of options to get images.
596	*/
597	$media = apply_filters( 'jetpack_images_pre_get_images', $media, $post_id, $args );
598	if ( $media )
599	return $media;
600
601	$defaults = array(
602	'width' => 200, // Required minimum width (if possible to determine)
603	'height' => 200, // Required minimum height (if possible to determine)
604
605	'fallback_to_avatars' => false, // Optionally include Blavatar and Gravatar (in that order) in the image stack
606	'avatar_size' => 96, // Used for both Grav and Blav
607	'gravatar_default' => false, // Default image to use if we end up with no Gravatar
608
609	'from_thumbnail' => true, // Use these flags to specify which methods to use to find an image
610	'from_slideshow' => true,
611	'from_gallery' => true,
612	'from_attachment' => true,
613	'from_blocks' => true,
614	'from_html' => true,
615
616	'html_content' => '' // HTML string to pass to from_html()
617	);
618	$args = wp_parse_args( $args, $defaults );
619
620	$media = false;
621	if ( $args['from_thumbnail'] )
622	$media = self::from_thumbnail( $post_id, $args['width'], $args['height'] );
623	if ( !$media && $args['from_slideshow'] )
624	$media = self::from_slideshow( $post_id, $args['width'], $args['height'] );
625	if ( !$media && $args['from_gallery'] )
626	$media = self::from_gallery( $post_id );
627	if ( !$media && $args['from_attachment'] )
628	$media = self::from_attachment( $post_id, $args['width'], $args['height'] );
629	if ( ! $media && $args['from_blocks'] ) {
630	if ( empty( $args['html_content'] ) )
631	$media = self::from_blocks( $post_id, $args['width'], $args['height'] ); // Use the post_id, which will load the content
632	else
633	$media = self::from_blocks( $args['html_content'], $args['width'], $args['height'] ); // If html_content is provided, use that
634	}
635	if ( !$media && $args['from_html'] ) {
636	if ( empty( $args['html_content'] ) )
637	$media = self::from_html( $post_id, $args['width'], $args['height'] ); // Use the post_id, which will load the content
638	else
639	$media = self::from_html( $args['html_content'], $args['width'], $args['height'] ); // If html_content is provided, use that
640	}
641
642	if ( !$media && $args['fallback_to_avatars'] ) {
643	$media = self::from_blavatar( $post_id, $args['avatar_size'] );
644	if ( !$media )
645	$media = self::from_gravatar( $post_id, $args['avatar_size'], $args['gravatar_default'] );
646	}
647
648	/**
649	* Filters the array of images that would be good for a specific post.
650	* This filter is applied after options ($args) filter the original array.
651	*
652	* @since 2.0.0
653	*
654	* @param array $media Array of images that would be good for a specific post.
655	* @param int $post_id Post ID.
656	* @param array $args Array of options to get images.
657	*/
658	return apply_filters( 'jetpack_images_get_images', $media, $post_id, $args );
659	}
660
661	/**
662	* Takes an image URL and pixel dimensions then returns a URL for the
663	* resized and cropped image.
664	*
665	* @param string $src
666	* @param int $dimension
667	* @return string Transformed image URL
668	*/
669	static function fit_image_url( $src, $width, $height ) {
670	$width = (int) $width;
671	$height = (int) $height;
672
673	if ( $width < 1 \|\| $height < 1 ) {
674	return $src;
675	}
676
677	// See if we should bypass WordPress.com SaaS resizing
678	if ( has_filter( 'jetpack_images_fit_image_url_override' ) ) {
679	/**
680	* Filters the image URL used after dimensions are set by Photon.
681	*
682	* @since 3.3.0
683	*
684	* @param string $src Image URL.
685	* @param int $width Image width.
686	* @param int $width Image height.
687	*/
688	return apply_filters( 'jetpack_images_fit_image_url_override', $src, $width, $height );
689	}
690
691	// If WPCOM hosted image use native transformations
692	$img_host = parse_url( $src, PHP_URL_HOST );
693	if ( '.files.wordpress.com' == substr( $img_host, -20 ) ) {
694	return add_query_arg( array( 'w' => $width, 'h' => $height, 'crop' => 1 ), set_url_scheme( $src ) );
695	}
696
697	// Use Photon magic
698	if( function_exists( 'jetpack_photon_url' ) ) {
699	return jetpack_photon_url( $src, array( 'resize' => "$width,$height" ) );
700	}
701
702	// Arg... no way to resize image using WordPress.com infrastructure!
703	return $src;
704	}
705
706	/**
707	* Get HTML from given post content.
708	*
709	* @since 6.9.0
710	*
711	* @param mixed $html_or_id The HTML string to parse for images, or a post id.
712	*
713	* @return array $html_info {
714	* @type string $html Post content.
715	* @type string $post_url Post URL.
716	* }
717	*/
718	static function get_post_html( $html_or_id ) {
719	if ( is_numeric( $html_or_id ) ) {
720	$post = get_post( $html_or_id );
721
722	if ( empty( $post ) \|\| ! empty( $post->post_password ) ) {
723	return '';
724	}
725
726	$html_info = array(
727	'html' => $post->post_content, // DO NOT apply the_content filters here, it will cause loops.
728	'post_url' => get_permalink( $post->ID ),
729	);
730	} else {
731	$html_info = array(
732	'html' => $html_or_id,
733	'post_url' => '',
734	);
735	}
736	return $html_info;
737	}
738
739	/**
740	* Get info about a WordPress attachment.
741	*
742	* @since 6.9.0
743	*
744	* @param int $attachment_id Attachment ID.
745	* @param string $post_url URL of the post, if we have one.
746	* @param int $width Minimum Image width.
747	* @param int $height Minimum Image height.
748	* @return array\|bool Image data or false if unavailable.
749	*/
750	public static function get_attachment_data( $attachment_id, $post_url = '', $width, $height ) {
751	if ( empty( $attachment_id ) ) {
752	return false;
753	}
754
755	$meta = wp_get_attachment_metadata( $attachment_id );
756
757	// The image must be larger than 200x200.
758	if ( ! isset( $meta['width'] ) \|\| $meta['width'] < $width ) {
759	return false;
760	}
761	if ( ! isset( $meta['height'] ) \|\| $meta['height'] < $height ) {
762	return false;
763	}
764
765	$url = wp_get_attachment_url( $attachment_id );
766
767	return array(
768	'type' => 'image',
769	'from' => 'attachment',
770	'src' => $url,
771	'src_width' => $meta['width'],
772	'src_height' => $meta['height'],
773	'href' => $post_url,
774	'alt_text' => self::get_alt_text( $attachment_id ),
775	);
776	}
777
778	/**
779	* Get the alt text for an image or other media from the Media Library.
780	*
781	* @since 7.1
782	*
783	* @param int $attachment_id The Post ID of the media.
784	* @return string The alt text value or an emptry string.
785	*/
786	public static function get_alt_text( $attachment_id ) {
787	return get_post_meta( $attachment_id, '_wp_attachment_image_alt', true );
788	}
789	}
790