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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 |
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281 |
|
282 | $post_types = get_post_types( array( 'show_ui' => true ) ); |
283 | /** |
284 | * Filter the array of post types to cache oEmbed results for. |
285 | * |
286 | * @since 2.9.0 |
287 | * |
288 | * @param array $post_types Array of post types to cache oEmbed results for. Defaults to post types with `show_ui` set to true. |
289 | */ |
290 | if ( empty( $post->ID ) || ! in_array( $post->post_type, apply_filters( 'embed_cache_oembed_types', $post_types ) ) ){ |
291 | return; |
292 | } |
293 |
|
294 | // Trigger a caching |
295 | if ( ! empty( $post->post_content ) ) { |
296 | $this->post_ID = $post->ID; |
297 | $this->usecache = false; |
298 |
|
299 | $content = $this->run_shortcode( $post->post_content ); |