Gecko [ herotex-group.site ]

Name	Size	Permission	Date
ID3	[ DIR ]	drwxr-xr-x	2024-10-19 13:53
IXR	[ DIR ]	drwxr-xr-x	2024-10-19 13:53
PHPMailer	[ DIR ]	drwxr-xr-x	2024-10-19 13:53
Requests	[ DIR ]	drwxr-xr-x	2024-10-19 13:53
SimplePie	[ DIR ]	drwxr-xr-x	2024-11-13 07:31
Text	[ DIR ]	drwxr-xr-x	2024-11-13 07:31
assets	[ DIR ]	drwxr-xr-x	2024-11-13 07:31
block-bindings	[ DIR ]	drwxr-xr-x	2024-10-19 13:53
block-patterns	[ DIR ]	drwxr-xr-x	2024-10-19 13:53
block-supports	[ DIR ]	drwxr-xr-x	2025-04-15 17:32
blocks	[ DIR ]	drwxr-xr-x	2025-04-20 21:03
certificates	[ DIR ]	drwxr-xr-x	2024-10-19 13:53
css	[ DIR ]	drwxr-xr-x	2025-04-15 17:32
customize	[ DIR ]	drwxr-xr-x	2024-10-19 13:53
fonts	[ DIR ]	drwxr-xr-x	2024-10-19 13:53
html-api	[ DIR ]	drwxr-xr-x	2024-11-13 07:31
images	[ DIR ]	drwxr-xr-x	2024-10-19 13:53
interactivity-api	[ DIR ]	drwxr-xr-x	2024-10-19 13:53
js	[ DIR ]	drwxr-xr-x	2024-10-19 13:53
l10n	[ DIR ]	drwxr-xr-x	2024-10-19 13:53
php-compat	[ DIR ]	drwxr-xr-x	2024-10-19 13:53
pomo	[ DIR ]	drwxr-xr-x	2024-10-19 13:53
rest-api	[ DIR ]	drwxr-xr-x	2024-10-19 13:53
sitemaps	[ DIR ]	drwxr-xr-x	2024-12-26 17:27
sodium_compat	[ DIR ]	drwxr-xr-x	2024-10-19 13:53
style-engine	[ DIR ]	drwxr-xr-x	2024-10-19 13:53
theme-compat	[ DIR ]	drwxr-xr-x	2024-10-19 13:53
widgets	[ DIR ]	drwxr-xr-x	2025-03-15 19:55
.htaccess	197 B	-r--r--r--	2025-04-22 01:18
admin-bar.php	36.09 KB	-rw-r--r--	2025-04-15 17:32
atomlib.php	11.79 KB	-rw-r--r--	2024-11-13 07:31
author-template.php	18.51 KB	-rw-r--r--	2024-08-26 16:31
block-bindings.php	5.46 KB	-rw-r--r--	2024-08-26 16:31
block-editor.php	28.12 KB	-rw-r--r--	2025-04-15 17:32
block-i18n.json	316 B	-rw-r--r--	2024-08-26 16:31
block-patterns.php	12.9 KB	-rw-r--r--	2025-04-15 17:32
block-template-utils.php	60.46 KB	-rw-r--r--	2025-04-15 17:32
block-template.php	15 KB	-rw-r--r--	2025-04-15 17:32
blocks.php	108.29 KB	-rw-r--r--	2025-04-15 17:32
bookmark-template.php	12.47 KB	-rw-r--r--	2025-04-15 17:32
bookmark.php	15.07 KB	-rw-r--r--	2024-08-26 16:31
cache-compat.php	5.83 KB	-rw-r--r--	2024-08-26 16:31
cache.php	13.16 KB	-rw-r--r--	2024-08-26 16:31
canonical.php	33.71 KB	-rw-r--r--	2024-11-13 07:31
capabilities.php	41.72 KB	-rw-r--r--	2024-11-13 07:31
category-template.php	55.67 KB	-rw-r--r--	2024-08-26 16:31
category.php	12.53 KB	-rw-r--r--	2025-04-15 17:32
class-IXR.php	2.55 KB	-rw-r--r--	2025-04-15 17:32
class-avif-info.php	28.92 KB	-rw-r--r--	2024-08-26 16:31
class-feed.php	539 B	-rw-r--r--	2024-11-13 07:31
class-http.php	367 B	-rw-r--r--	2024-08-26 16:31
class-json.php	42.66 KB	-rw-r--r--	2024-08-26 16:31
class-oembed.php	401 B	-rw-r--r--	2024-08-26 16:31
class-phpass.php	6.61 KB	-rw-r--r--	2024-11-13 07:31
class-phpmailer.php	664 B	-rw-r--r--	2024-08-26 16:31
class-pop3.php	20.63 KB	-rw-r--r--	2025-04-15 17:32
class-requests.php	2.18 KB	-rw-r--r--	2024-08-26 16:31
class-simplepie.php	453 B	-rw-r--r--	2024-11-13 07:31
class-smtp.php	457 B	-rw-r--r--	2024-08-26 16:31
class-snoopy.php	36.83 KB	-rw-r--r--	2024-08-26 16:31
class-walker-category-dropdown.php	2.41 KB	-rw-r--r--	2024-08-26 16:31
class-walker-category.php	8.28 KB	-rw-r--r--	2024-08-26 16:31
class-walker-comment.php	13.89 KB	-rw-r--r--	2024-08-26 16:31
class-walker-nav-menu.php	11.76 KB	-rw-r--r--	2025-04-15 17:32
class-walker-page-dropdown.php	2.65 KB	-rw-r--r--	2024-08-26 16:31
class-walker-page.php	7.43 KB	-rw-r--r--	2024-08-26 16:31
class-wp-admin-bar.php	17.46 KB	-rw-r--r--	2024-08-26 16:31
class-wp-ajax-response.php	5.14 KB	-rw-r--r--	2024-08-26 16:31
class-wp-application-passwords.php	16.7 KB	-rw-r--r--	2025-04-15 17:32
class-wp-block-bindings-registry.php	8.26 KB	-rw-r--r--	2024-11-13 07:31
class-wp-block-bindings-source.php	2.92 KB	-rw-r--r--	2024-11-13 07:31
class-wp-block-editor-context.php	1.32 KB	-rw-r--r--	2024-08-26 16:31
class-wp-block-list.php	4.65 KB	-rw-r--r--	2024-08-26 16:31
class-wp-block-metadata-registry.php	11.62 KB	-rw-r--r--	2025-04-15 17:32
class-wp-block-parser-block.php	2.5 KB	-rw-r--r--	2024-08-26 16:31
class-wp-block-parser-frame.php	1.97 KB	-rw-r--r--	2024-11-13 07:31
class-wp-block-parser.php	11.26 KB	-rw-r--r--	2024-08-26 16:31
class-wp-block-pattern-categories-registry.php	5.25 KB	-rw-r--r--	2024-08-26 16:31
class-wp-block-patterns-registry.php	10.53 KB	-rw-r--r--	2024-11-13 07:31
class-wp-block-styles-registry.php	6.25 KB	-rw-r--r--	2025-04-15 17:32
class-wp-block-supports.php	5.49 KB	-rw-r--r--	2025-04-15 17:32
class-wp-block-template.php	1.99 KB	-rw-r--r--	2024-11-13 07:31
class-wp-block-templates-registry.php	7.06 KB	-rw-r--r--	2025-02-11 17:31
class-wp-block-type-registry.php	4.9 KB	-rw-r--r--	2024-08-26 16:31
class-wp-block-type.php	16.86 KB	-rw-r--r--	2024-08-26 16:31
class-wp-block.php	22.5 KB	-rw-r--r--	2025-04-15 17:32
class-wp-classic-to-block-menu-converter.php	3.99 KB	-rw-r--r--	2024-08-26 16:31
class-wp-comment-query.php	47.26 KB	-rw-r--r--	2024-08-26 16:31
class-wp-comment.php	9.22 KB	-rw-r--r--	2025-04-15 17:32
class-wp-customize-control.php	25.25 KB	-rw-r--r--	2025-04-15 17:32
class-wp-customize-manager.php	197.84 KB	-rw-r--r--	2025-04-15 17:32
class-wp-customize-nav-menus.php	56.07 KB	-rw-r--r--	2025-04-15 17:32
class-wp-customize-panel.php	10.46 KB	-rw-r--r--	2025-04-15 17:32
class-wp-customize-section.php	10.95 KB	-rw-r--r--	2024-11-13 07:31
class-wp-customize-setting.php	29.26 KB	-rw-r--r--	2025-04-15 17:32
class-wp-customize-widgets.php	70.52 KB	-rw-r--r--	2025-04-15 17:32
class-wp-date-query.php	34.89 KB	-rw-r--r--	2025-04-15 17:32
class-wp-dependencies.php	14.78 KB	-rw-r--r--	2024-11-13 07:31
class-wp-dependency.php	2.57 KB	-rw-r--r--	2024-08-26 16:31
class-wp-duotone.php	39.83 KB	-rw-r--r--	2024-08-26 16:31
class-wp-editor.php	70.64 KB	-rw-r--r--	2025-04-15 17:32
class-wp-embed.php	15.56 KB	-rw-r--r--	2025-04-15 17:32
class-wp-error.php	7.33 KB	-rw-r--r--	2024-08-26 16:31
class-wp-exception.php	253 B	-rw-r--r--	2024-11-13 07:31
class-wp-fatal-error-handler.php	7.96 KB	-rw-r--r--	2024-11-13 07:31
class-wp-feed-cache-transient.php	3.1 KB	-rw-r--r--	2024-11-13 07:31
class-wp-feed-cache.php	969 B	-rw-r--r--	2024-11-13 07:31
class-wp-hook.php	15.63 KB	-rw-r--r--	2024-08-26 16:31
class-wp-http-cookie.php	7.22 KB	-rw-r--r--	2024-08-26 16:31
class-wp-http-curl.php	12.25 KB	-rw-r--r--	2024-08-26 16:31
class-wp-http-encoding.php	6.53 KB	-rw-r--r--	2024-08-26 16:31
class-wp-http-ixr-client.php	3.42 KB	-rw-r--r--	2024-08-26 16:31
class-wp-http-proxy.php	5.84 KB	-rw-r--r--	2024-08-26 16:31
class-wp-http-requests-hooks.php	1.97 KB	-rw-r--r--	2024-08-26 16:31
class-wp-http-requests-response.php	4.3 KB	-rw-r--r--	2024-08-26 16:31
class-wp-http-response.php	2.91 KB	-rw-r--r--	2024-08-26 16:31
class-wp-http-streams.php	16.46 KB	-rw-r--r--	2024-08-26 16:31
class-wp-http.php	40.6 KB	-rw-r--r--	2025-04-15 17:32
class-wp-image-editor-gd.php	19.69 KB	-rw-r--r--	2025-04-15 17:32
class-wp-image-editor-imagick.php	33.92 KB	-rw-r--r--	2025-04-15 17:32
class-wp-image-editor.php	17.12 KB	-rw-r--r--	2025-04-15 17:32
class-wp-list-util.php	7.27 KB	-rw-r--r--	2024-08-26 16:31
class-wp-locale-switcher.php	6.62 KB	-rw-r--r--	2025-04-15 17:32
class-wp-locale.php	16.49 KB	-rw-r--r--	2025-04-15 17:32
class-wp-matchesmapregex.php	1.79 KB	-rw-r--r--	2024-08-26 16:31
class-wp-meta-query.php	29.82 KB	-rw-r--r--	2024-08-26 16:31
class-wp-metadata-lazyloader.php	6.67 KB	-rw-r--r--	2024-08-26 16:31
class-wp-navigation-fallback.php	9 KB	-rw-r--r--	2024-08-26 16:31
class-wp-network-query.php	19.39 KB	-rw-r--r--	2024-08-26 16:31
class-wp-network.php	12.01 KB	-rw-r--r--	2024-11-13 07:31
class-wp-object-cache.php	17.11 KB	-rw-r--r--	2024-11-13 07:31
class-wp-oembed-controller.php	6.74 KB	-rw-r--r--	2024-08-26 16:31
class-wp-oembed.php	30.91 KB	-rw-r--r--	2025-04-15 17:32
class-wp-paused-extensions-storage.php	4.99 KB	-rw-r--r--	2024-11-13 07:31
class-wp-phpmailer.php	3.71 KB	-rw-r--r--	2025-04-15 17:32
class-wp-plugin-dependencies.php	24.72 KB	-rw-r--r--	2025-04-15 17:32
class-wp-post-type.php	29.96 KB	-rw-r--r--	2025-04-15 17:32
class-wp-post.php	6.34 KB	-rw-r--r--	2025-04-15 17:32
class-wp-query.php	154.32 KB	-rw-r--r--	2025-04-15 17:32
class-wp-recovery-mode-cookie-service.php	6.72 KB	-rw-r--r--	2024-08-26 16:31
class-wp-recovery-mode-email-service.php	10.92 KB	-rw-r--r--	2024-08-26 16:31
class-wp-recovery-mode-key-service.php	4.77 KB	-rw-r--r--	2025-04-15 17:32
class-wp-recovery-mode-link-service.php	3.38 KB	-rw-r--r--	2024-08-26 16:31
class-wp-recovery-mode.php	11.18 KB	-rw-r--r--	2025-04-15 17:32
class-wp-rewrite.php	62.2 KB	-rw-r--r--	2024-11-13 07:31
class-wp-role.php	2.46 KB	-rw-r--r--	2024-08-26 16:31
class-wp-roles.php	8.38 KB	-rw-r--r--	2024-11-13 07:31
class-wp-script-modules.php	19.01 KB	-rw-r--r--	2025-04-15 17:32
class-wp-scripts.php	27.68 KB	-rw-r--r--	2024-11-13 07:31
class-wp-session-tokens.php	7.15 KB	-rw-r--r--	2025-04-15 17:32
class-wp-simplepie-file.php	3.33 KB	-rw-r--r--	2024-11-13 07:31
class-wp-simplepie-sanitize-kses.php	1.87 KB	-rw-r--r--	2025-04-15 17:32
class-wp-site-query.php	30.88 KB	-rw-r--r--	2024-11-13 07:31
class-wp-site.php	7.28 KB	-rw-r--r--	2024-08-26 16:31
class-wp-speculation-rules.php	7.35 KB	-rw-r--r--	2025-04-15 17:32
class-wp-styles.php	10.75 KB	-rw-r--r--	2024-11-13 07:31
class-wp-tax-query.php	19.1 KB	-rw-r--r--	2024-08-26 16:31
class-wp-taxonomy.php	18.12 KB	-rw-r--r--	2025-04-15 17:32
class-wp-term-query.php	39.91 KB	-rw-r--r--	2024-11-13 07:31
class-wp-term.php	5.17 KB	-rw-r--r--	2024-08-26 16:31
class-wp-text-diff-renderer-inline.php	979 B	-rw-r--r--	2024-08-26 16:31
class-wp-text-diff-renderer-table.php	18.44 KB	-rw-r--r--	2025-04-15 17:32
class-wp-textdomain-registry.php	10.24 KB	-rw-r--r--	2024-11-21 17:52
class-wp-theme-json-data.php	1.77 KB	-rw-r--r--	2024-08-26 16:31
class-wp-theme-json-resolver.php	34.9 KB	-rw-r--r--	2025-04-15 17:32
class-wp-theme-json-schema.php	7.19 KB	-rw-r--r--	2024-08-26 16:31
class-wp-theme-json.php	159.71 KB	-rw-r--r--	2025-04-15 17:32
class-wp-theme.php	64.27 KB	-rw-r--r--	2025-04-15 17:32
class-wp-token-map.php	27.95 KB	-rw-r--r--	2024-11-13 07:31
class-wp-url-pattern-prefixer.php	4.69 KB	-rw-r--r--	2025-04-15 17:32
class-wp-user-meta-session-tokens.php	2.92 KB	-rw-r--r--	2024-08-26 16:31
class-wp-user-query.php	42.63 KB	-rw-r--r--	2025-04-15 17:32
class-wp-user-request.php	2.25 KB	-rw-r--r--	2025-04-15 17:32
class-wp-user.php	22.46 KB	-rw-r--r--	2025-04-15 17:32
class-wp-walker.php	13.01 KB	-rw-r--r--	2024-09-10 18:40
class-wp-widget-factory.php	3.27 KB	-rw-r--r--	2024-08-26 16:31
class-wp-widget.php	18 KB	-rw-r--r--	2025-04-15 17:32
class-wp-xmlrpc-server.php	210.39 KB	-rw-r--r--	2025-04-15 17:32
class-wp.php	25.7 KB	-rw-r--r--	2025-04-15 17:32
class-wpdb.php	115.51 KB	-rw-r--r--	2025-04-15 17:32
class.wp-dependencies.php	373 B	-rw-r--r--	2024-08-26 16:31
class.wp-scripts.php	343 B	-rw-r--r--	2024-08-26 16:31
class.wp-styles.php	338 B	-rw-r--r--	2024-08-26 16:31
comment-template.php	100.47 KB	-rw-r--r--	2025-04-15 17:32
comment.php	128.46 KB	-rw-r--r--	2025-04-15 17:32
compat.php	15.99 KB	-rw-r--r--	2025-04-15 17:32
cron.php	41.66 KB	-rw-r--r--	2025-04-15 17:32
date.php	400 B	-rw-r--r--	2024-08-26 16:31
default-constants.php	11.1 KB	-rw-r--r--	2024-11-13 07:31
default-filters.php	35.84 KB	-rw-r--r--	2025-04-15 17:32
default-widgets.php	2.24 KB	-rw-r--r--	2025-04-15 17:32
deprecated.php	187.07 KB	-rw-r--r--	2025-04-15 17:32
embed-template.php	338 B	-rw-r--r--	2024-08-26 16:31
embed.php	37.28 KB	-rw-r--r--	2025-04-15 17:32
error-protection.php	4.02 KB	-rw-r--r--	2024-08-26 16:31
error_log	22.32 KB	-rw-r--r--	2025-04-30 04:04
feed-atom-comments.php	5.38 KB	-rw-r--r--	2024-08-26 16:31
feed-atom.php	3.05 KB	-rw-r--r--	2025-04-15 17:32
feed-rdf.php	2.61 KB	-rw-r--r--	2024-08-26 16:31
feed-rss.php	1.16 KB	-rw-r--r--	2024-08-26 16:31
feed-rss2-comments.php	4.04 KB	-rw-r--r--	2024-08-26 16:31
feed-rss2.php	3.71 KB	-rw-r--r--	2024-08-26 16:31
feed.php	22.86 KB	-rw-r--r--	2024-11-13 07:31
fonts.php	9.52 KB	-rw-r--r--	2024-11-13 07:31
formatting.php	334.24 KB	-rw-r--r--	2025-04-15 17:32
functions.php	280.81 KB	-rw-r--r--	2025-04-15 17:32
functions.wp-scripts.php	14.22 KB	-rw-r--r--	2024-08-26 16:31
functions.wp-styles.php	8.38 KB	-rw-r--r--	2024-08-26 16:31
general-template.php	168.46 KB	-rw-r--r--	2025-04-15 17:32
global-styles-and-settings.php	20.76 KB	-rw-r--r--	2025-04-15 17:32
http.php	24.72 KB	-rw-r--r--	2024-11-13 07:31
https-detection.php	5.72 KB	-rw-r--r--	2025-04-15 17:32
https-migration.php	4.63 KB	-rw-r--r--	2024-08-26 16:31
kses.php	73.62 KB	-rw-r--r--	2024-08-26 16:31
l10n.php	66.92 KB	-rw-r--r--	2025-04-15 17:32
link-template.php	154.1 KB	-rw-r--r--	2025-04-15 17:32
load.php	55.12 KB	-rw-r--r--	2025-04-15 17:32
locale.php	162 B	-rw-r--r--	2024-08-26 16:31
media-template.php	61.58 KB	-rw-r--r--	2025-04-15 17:32
media.php	215.12 KB	-rw-r--r--	2025-04-15 17:32
meta.php	63.71 KB	-rw-r--r--	2025-04-15 17:32
ms-blogs.php	25.24 KB	-rw-r--r--	2025-04-15 17:32
ms-default-constants.php	4.81 KB	-rw-r--r--	2024-08-26 16:31
ms-default-filters.php	6.48 KB	-rw-r--r--	2024-08-26 16:31
ms-deprecated.php	21.25 KB	-rw-r--r--	2024-08-26 16:31
ms-files.php	2.71 KB	-rw-r--r--	2025-04-15 17:32
ms-functions.php	89.44 KB	-rw-r--r--	2025-04-15 17:32
ms-load.php	19.42 KB	-rw-r--r--	2024-08-26 16:31
ms-network.php	3.69 KB	-rw-r--r--	2024-08-26 16:31
ms-settings.php	4.1 KB	-rw-r--r--	2025-04-15 17:32
ms-site.php	40.35 KB	-rw-r--r--	2025-04-15 17:32
nav-menu-template.php	25.38 KB	-rw-r--r--	2025-04-15 17:32
nav-menu.php	43.33 KB	-rw-r--r--	2024-11-13 07:31
option.php	100.65 KB	-rw-r--r--	2025-04-15 17:32
pluggable-deprecated.php	6.18 KB	-rw-r--r--	2025-04-15 17:32
pluggable.php	119.82 KB	-rw-r--r--	2025-04-15 17:32
plugin.php	34.63 KB	-rw-r--r--	2024-08-26 16:31
post-formats.php	6.94 KB	-rw-r--r--	2024-08-26 16:31
post-template.php	67.04 KB	-rw-r--r--	2025-04-15 17:32
post-thumbnail-template.php	10.62 KB	-rw-r--r--	2025-04-15 17:32
post.php	284.88 KB	-rw-r--r--	2025-04-15 17:32
query.php	36.17 KB	-rw-r--r--	2024-08-26 16:31
registration-functions.php	200 B	-rw-r--r--	2024-08-26 16:31
registration.php	200 B	-rw-r--r--	2024-08-26 16:31
rest-api.php	97.91 KB	-rw-r--r--	2025-04-15 17:32
revision.php	30.02 KB	-rw-r--r--	2025-04-15 17:32
rewrite.php	19.08 KB	-rw-r--r--	2024-11-13 07:31
robots-template.php	5.06 KB	-rw-r--r--	2024-08-26 16:31
rss-functions.php	255 B	-rw-r--r--	2024-08-26 16:31
rss.php	22.57 KB	-rw-r--r--	2024-11-13 07:31
script-loader.php	129.5 KB	-rw-r--r--	2025-04-15 17:32
script-modules.php	7.53 KB	-rw-r--r--	2024-11-13 07:31
session.php	258 B	-rw-r--r--	2024-08-26 16:31
shortcodes.php	23.49 KB	-rw-r--r--	2024-08-26 16:31
sitemaps.php	3.16 KB	-rw-r--r--	2024-08-26 16:31
speculative-loading.php	8.36 KB	-rw-r--r--	2025-04-15 17:32
spl-autoload-compat.php	441 B	-rw-r--r--	2024-08-26 16:31
style-engine.php	7.39 KB	-rw-r--r--	2024-08-26 16:31
taxonomy.php	172.1 KB	-rw-r--r--	2025-04-15 17:32
template-canvas.php	544 B	-rw-r--r--	2024-08-26 16:31
template-loader.php	2.94 KB	-rw-r--r--	2024-08-26 16:31
template.php	23.59 KB	-rw-r--r--	2024-08-26 16:31
theme-i18n.json	1.49 KB	-rw-r--r--	2025-04-15 17:32
theme-previews.php	2.77 KB	-rw-r--r--	2024-08-26 16:31
theme-templates.php	6.09 KB	-rw-r--r--	2025-04-15 17:32
theme.json	8.5 KB	-rw-r--r--	2024-08-26 16:31
theme.php	131.16 KB	-rw-r--r--	2025-04-15 17:32
update.php	36.62 KB	-rw-r--r--	2025-04-15 17:32
user.php	171.73 KB	-rw-r--r--	2025-04-15 17:32
vars.php	6.41 KB	-rw-r--r--	2025-04-15 17:32
version.php	1.06 KB	-rw-r--r--	2025-04-15 17:32
widgets.php	69.06 KB	-rw-r--r--	2025-04-15 17:32
wp-blog-header.php	2.73 KB	-r--r--r--	2025-04-22 01:18
wp-cron.php	2.73 KB	-rw-r--r--	2025-04-22 01:18
wp-db.php	445 B	-rw-r--r--	2024-08-26 16:31
wp-diff.php	799 B	-rw-r--r--	2025-04-15 17:32

Rename

<?php
/**
 * WordPress Post Thumbnail Template Functions.
 *
 * Support for post thumbnails.
 * Theme's functions.php must call add_theme_support( 'post-thumbnails' ) to use these.
 *
 * @package WordPress
 * @subpackage Template
 */

/**
 * Determines whether a post has an image attached.
 *
 * For more information on this and similar theme functions, check out
 * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
 * Conditional Tags} article in the Theme Developer Handbook.
 *
 * @since 2.9.0
 * @since 4.4.0 `$post` can be a post ID or WP_Post object.
 *
 * @param int|WP_Post|null $post Optional. Post ID or WP_Post object. Default is global `$post`.
 * @return bool Whether the post has an image attached.
 */
function has_post_thumbnail( $post = null ) {
	$thumbnail_id  = get_post_thumbnail_id( $post );
	$has_thumbnail = (bool) $thumbnail_id;

/**
	 * Filters whether a post has a post thumbnail.
	 *
	 * @since 5.1.0
	 *
	 * @param bool             $has_thumbnail true if the post has a post thumbnail, otherwise false.
	 * @param int|WP_Post|null $post          Post ID or WP_Post object. Default is global `$post`.
	 * @param int|false        $thumbnail_id  Post thumbnail ID or false if the post does not exist.
	 */
	return (bool) apply_filters( 'has_post_thumbnail', $has_thumbnail, $post, $thumbnail_id );
}

/**
 * Retrieves the post thumbnail ID.
 *
 * @since 2.9.0
 * @since 4.4.0 `$post` can be a post ID or WP_Post object.
 * @since 5.5.0 The return value for a non-existing post
 *              was changed to false instead of an empty string.
 *
 * @param int|WP_Post|null $post Optional. Post ID or WP_Post object. Default is global `$post`.
 * @return int|false Post thumbnail ID (which can be 0 if the thumbnail is not set),
 *                   or false if the post does not exist.
 */
function get_post_thumbnail_id( $post = null ) {
	$post = get_post( $post );

if ( ! $post ) {
		return false;
	}

$thumbnail_id = (int) get_post_meta( $post->ID, '_thumbnail_id', true );

/**
	 * Filters the post thumbnail ID.
	 *
	 * @since 5.9.0
	 *
	 * @param int|false        $thumbnail_id Post thumbnail ID or false if the post does not exist.
	 * @param int|WP_Post|null $post         Post ID or WP_Post object. Default is global `$post`.
	 */
	return (int) apply_filters( 'post_thumbnail_id', $thumbnail_id, $post );
}

/**
 * Displays the post thumbnail.
 *
 * When a theme adds 'post-thumbnail' support, a special 'post-thumbnail' image size
 * is registered, which differs from the 'thumbnail' image size managed via the
 * Settings > Media screen.
 *
 * When using the_post_thumbnail() or related functions, the 'post-thumbnail' image
 * size is used by default, though a different size can be specified instead as needed.
 *
 * @since 2.9.0
 *
 * @see get_the_post_thumbnail()
 *
 * @param string|int[] $size Optional. Image size. Accepts any registered image size name, or an array of
 *                           width and height values in pixels (in that order). Default 'post-thumbnail'.
 * @param string|array $attr Optional. Query string or array of attributes. Default empty.
 */
function the_post_thumbnail( $size = 'post-thumbnail', $attr = '' ) {
	echo get_the_post_thumbnail( null, $size, $attr );
}

/**
 * Updates cache for thumbnails in the current loop.
 *
 * @since 3.2.0
 *
 * @global WP_Query $wp_query WordPress Query object.
 *
 * @param WP_Query|null $wp_query Optional. A WP_Query instance. Defaults to the $wp_query global.
 */
function update_post_thumbnail_cache( $wp_query = null ) {
	if ( ! $wp_query ) {
		$wp_query = $GLOBALS['wp_query'];
	}

if ( $wp_query->thumbnails_cached ) {
		return;
	}

$thumb_ids = array();

/*
	 * $wp_query may contain an array of post objects or post IDs.
	 *
	 * This ensures the cache is primed for all post objects to avoid
	 * `get_post()` calls in `get_the_post_thumbnail()` triggering an
	 * additional database call for each post.
	 */
	$parent_post_ids = array();
	foreach ( $wp_query->posts as $post ) {
		if ( $post instanceof WP_Post ) {
			$parent_post_ids[] = $post->ID;
		} elseif ( is_int( $post ) ) {
			$parent_post_ids[] = $post;
		}
	}
	_prime_post_caches( $parent_post_ids, false, true );

foreach ( $wp_query->posts as $post ) {
		$id = get_post_thumbnail_id( $post );
		if ( $id ) {
			$thumb_ids[] = $id;
		}
	}

if ( ! empty( $thumb_ids ) ) {
		_prime_post_caches( $thumb_ids, false, true );
	}

$wp_query->thumbnails_cached = true;
}

/**
 * Retrieves the post thumbnail.
 *
 * When a theme adds 'post-thumbnail' support, a special 'post-thumbnail' image size
 * is registered, which differs from the 'thumbnail' image size managed via the
 * Settings > Media screen.
 *
 * When using the_post_thumbnail() or related functions, the 'post-thumbnail' image
 * size is used by default, though a different size can be specified instead as needed.
 *
 * @since 2.9.0
 * @since 4.4.0 `$post` can be a post ID or WP_Post object.
 *
 * @param int|WP_Post|null $post Optional. Post ID or WP_Post object.  Default is global `$post`.
 * @param string|int[]     $size Optional. Image size. Accepts any registered image size name, or an array of
 *                               width and height values in pixels (in that order). Default 'post-thumbnail'.
 * @param string|array     $attr Optional. Query string or array of attributes. Default empty.
 * @return string The post thumbnail image tag.
 */
function get_the_post_thumbnail( $post = null, $size = 'post-thumbnail', $attr = '' ) {
	$post = get_post( $post );

if ( ! $post ) {
		return '';
	}

$post_thumbnail_id = get_post_thumbnail_id( $post );

/**
	 * Filters the post thumbnail size.
	 *
	 * @since 2.9.0
	 * @since 4.9.0 Added the `$post_id` parameter.
	 *
	 * @param string|int[] $size    Requested image size. Can be any registered image size name, or
	 *                              an array of width and height values in pixels (in that order).
	 * @param int          $post_id The post ID.
	 */
	$size = apply_filters( 'post_thumbnail_size', $size, $post->ID );

if ( $post_thumbnail_id ) {

/**
		 * Fires before fetching the post thumbnail HTML.
		 *
		 * Provides "just in time" filtering of all filters in wp_get_attachment_image().
		 *
		 * @since 2.9.0
		 *
		 * @param int          $post_id           The post ID.
		 * @param int          $post_thumbnail_id The post thumbnail ID.
		 * @param string|int[] $size              Requested image size. Can be any registered image size name, or
		 *                                        an array of width and height values in pixels (in that order).
		 */
		do_action( 'begin_fetch_post_thumbnail_html', $post->ID, $post_thumbnail_id, $size );

if ( in_the_loop() ) {
			update_post_thumbnail_cache();
		}

$html = wp_get_attachment_image( $post_thumbnail_id, $size, false, $attr );

/**
		 * Fires after fetching the post thumbnail HTML.
		 *
		 * @since 2.9.0
		 *
		 * @param int          $post_id           The post ID.
		 * @param int          $post_thumbnail_id The post thumbnail ID.
		 * @param string|int[] $size              Requested image size. Can be any registered image size name, or
		 *                                        an array of width and height values in pixels (in that order).
		 */
		do_action( 'end_fetch_post_thumbnail_html', $post->ID, $post_thumbnail_id, $size );

} else {
		$html = '';
	}

/**
	 * Filters the post thumbnail HTML.
	 *
	 * @since 2.9.0
	 *
	 * @param string       $html              The post thumbnail HTML.
	 * @param int          $post_id           The post ID.
	 * @param int          $post_thumbnail_id The post thumbnail ID, or 0 if there isn't one.
	 * @param string|int[] $size              Requested image size. Can be any registered image size name, or
	 *                                        an array of width and height values in pixels (in that order).
	 * @param string|array $attr              Query string or array of attributes.
	 */
	return apply_filters( 'post_thumbnail_html', $html, $post->ID, $post_thumbnail_id, $size, $attr );
}

/**
 * Returns the post thumbnail URL.
 *
 * @since 4.4.0
 *
 * @param int|WP_Post|null $post Optional. Post ID or WP_Post object.  Default is global `$post`.
 * @param string|int[]     $size Optional. Registered image size to retrieve the source for or a flat array
 *                               of height and width dimensions. Default 'post-thumbnail'.
 * @return string|false Post thumbnail URL or false if no image is available. If `$size` does not match
 *                      any registered image size, the original image URL will be returned.
 */
function get_the_post_thumbnail_url( $post = null, $size = 'post-thumbnail' ) {
	$post_thumbnail_id = get_post_thumbnail_id( $post );

if ( ! $post_thumbnail_id ) {
		return false;
	}

$thumbnail_url = wp_get_attachment_image_url( $post_thumbnail_id, $size );

/**
	 * Filters the post thumbnail URL.
	 *
	 * @since 5.9.0
	 *
	 * @param string|false     $thumbnail_url Post thumbnail URL or false if the post does not exist.
	 * @param int|WP_Post|null $post          Post ID or WP_Post object. Default is global `$post`.
	 * @param string|int[]     $size          Registered image size to retrieve the source for or a flat array
	 *                                        of height and width dimensions. Default 'post-thumbnail'.
	 */
	return apply_filters( 'post_thumbnail_url', $thumbnail_url, $post, $size );
}

/**
 * Displays the post thumbnail URL.
 *
 * @since 4.4.0
 *
 * @param string|int[] $size Optional. Image size to use. Accepts any valid image size,
 *                           or an array of width and height values in pixels (in that order).
 *                           Default 'post-thumbnail'.
 */
function the_post_thumbnail_url( $size = 'post-thumbnail' ) {
	$url = get_the_post_thumbnail_url( null, $size );

if ( $url ) {
		echo esc_url( $url );
	}
}

/**
 * Returns the post thumbnail caption.
 *
 * @since 4.6.0
 *
 * @param int|WP_Post|null $post Optional. Post ID or WP_Post object. Default is global `$post`.
 * @return string Post thumbnail caption.
 */
function get_the_post_thumbnail_caption( $post = null ) {
	$post_thumbnail_id = get_post_thumbnail_id( $post );

if ( ! $post_thumbnail_id ) {
		return '';
	}

$caption = wp_get_attachment_caption( $post_thumbnail_id );

if ( ! $caption ) {
		$caption = '';
	}

return $caption;
}

/**
 * Displays the post thumbnail caption.
 *
 * @since 4.6.0
 *
 * @param int|WP_Post|null $post Optional. Post ID or WP_Post object. Default is global `$post`.
 */
function the_post_thumbnail_caption( $post = null ) {
	/**
	 * Filters the displayed post thumbnail caption.
	 *
	 * @since 4.6.0
	 *
	 * @param string $caption Caption for the given attachment.
	 */
	echo apply_filters( 'the_post_thumbnail_caption', get_the_post_thumbnail_caption( $post ) );
}