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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.
| Line | Code |
|---|---|
| 331 | } |
| 332 | |
| 333 | /** |
| 334 | * Filters the oEmbed discovery links HTML. |
| 335 | * |
| 336 | * @since 4.4.0 |
| 337 | * |
| 338 | * @param string $output HTML of the discovery links. |
| 339 | */ |
| 340 | echo apply_filters( 'oembed_discovery_links', $output ); |
| 341 | } |
| 342 | |
| 343 | /** |
| 344 | * Adds the necessary JavaScript to communicate with the embedded iframes. |
| 345 | * |
| 346 | * @since 4.4.0 |
| 347 | */ |
| 348 | function wp_oembed_add_host_js() { |
| 349 | wp_enqueue_script( 'wp-embed' ); |