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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )
apply_filters( "hook_name", "what_to_filter" )
.Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
This hook occurs 2 times in this file.
Line | Code |
---|---|
247 | * @since 2.9.0 |
248 | * |
249 | * @see WP_Embed::shortcode() |
250 | * |
251 | * @param string|false $cache The cached HTML result, stored in post meta. |
252 | * @param string $url The attempted embed URL. |
253 | * @param array $attr An array of shortcode attributes. |
254 | * @param int $post_ID Post ID. |
255 | */ |
256 | return apply_filters( 'embed_oembed_html', $cache, $url, $attr, $post_ID ); |
257 | } |
258 | } |
259 |
|
260 | /** |
261 | * Filters whether to inspect the given URL for discoverable link tags. |
262 | * |
263 | * @since 2.9.0 |
264 | * @since 4.4.0 The default value changed to true. |
265 | * |
Line | Code |
330 |
|
331 | if ( $has_kses ) { |
332 | kses_init_filters(); |
333 | } |
334 | } |
335 |
|
336 | // If there was a result, return it. |
337 | if ( $html ) { |
338 | /** This filter is documented in wp-includes/class-wp-embed.php */ |
339 | return apply_filters( 'embed_oembed_html', $html, $url, $attr, $post_ID ); |
340 | } |
341 |
|
342 | // Still unknown. |
343 | return $this->maybe_make_link( $url ); |
344 | } |
345 |
|
346 | /** |
347 | * Delete all oEmbed caches. Unused by core as of 4.0.0. |
348 | * |