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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 |
|---|---|
| 2335 | wp_embed_register_handler( 'audio', '#^https?://.+?\.(' . join( '|', wp_get_audio_extensions() ) . ')$#i', apply_filters( 'wp_audio_embed_handler', 'wp_embed_handler_audio' ), 9999 ); |
| 2336 | |
| 2337 | /** |
| 2338 | * Filter the video embed handler callback. |
| 2339 | * |
| 2340 | * @since 3.6.0 |
| 2341 | * |
| 2342 | * @param callback $handler Video embed handler callback function. |
| 2343 | */ |
| 2344 | wp_embed_register_handler( 'video', '#^https?://.+?\.(' . join( '|', wp_get_video_extensions() ) . ')$#i', apply_filters( 'wp_video_embed_handler', 'wp_embed_handler_video' ), 9999 ); |
| 2345 | } |
| 2346 | |
| 2347 | /** |
| 2348 | * The Google Video embed handler callback. |
| 2349 | * |
| 2350 | * Google Video does not support oEmbed. |
| 2351 | * |
| 2352 | * @see WP_Embed::register_handler() |
| 2353 | * @see WP_Embed::shortcode() |