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WP_Embed::cache_oembed( int $post_ID )

Triggers a caching of all oEmbed results.

Parameters

$post_ID

(int) (Required) Post ID to do the caching for.

Source

File: wp-includes/class-wp-embed.php 

public function cache_oembed( $post_ID ) {
		$post = get_post( $post_ID );

		$post_types = get_post_types( array( 'show_ui' => true ) );

		/**
		 * Filters the array of post types to cache oEmbed results for.
		 *
		 * @since 2.9.0
		 *
		 * @param string[] $post_types Array of post type names to cache oEmbed results for. Defaults to post types with `show_ui` set to true.
		 */
		$cache_oembed_types = apply_filters( 'embed_cache_oembed_types', $post_types );

		if ( empty( $post->ID ) || ! in_array( $post->post_type, $cache_oembed_types, true ) ) {
			return;
		}

		// Trigger a caching.
		if ( ! empty( $post->post_content ) ) {
			$this->post_ID  = $post->ID;
			$this->usecache = false;

			$content = $this->run_shortcode( $post->post_content );
			$this->autoembed( $content );

			$this->usecache = true;
		}
	}

Uses

Uses Description
wp-includes/class-wp-embed.php: WP_Embed::autoembed()

Passes any unlinked URLs that are on their own line to WP_Embed::shortcode() for potential embedding.
wp-includes/class-wp-embed.php: embed_cache_oembed_types

Filters the array of post types to cache oEmbed results for.
wp-includes/class-wp-embed.php: WP_Embed::run_shortcode()

Process the [embed] shortcode.
wp-includes/plugin.php: apply_filters()

Calls the callback functions that have been added to a filter hook.
wp-includes/post.php: get_post()

Retrieves post data given a post ID or post object.
wp-includes/post.php: get_post_types()

Get a list of all registered post type objects.

© 2003–2019 WordPress Foundation
Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/classes/wp_embed/cache_oembed