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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 |
|---|---|
| 1222 | |
| 1223 | /** |
| 1224 | * Triggers a caching of all oEmbed results. |
| 1225 | * |
| 1226 | * @param int $post_ID Post ID to do the caching for. |
| 1227 | */ |
| 1228 | function cache_oembed( $post_ID ) { |
| 1229 | $post = get_post( $post_ID ); |
| 1230 | |
| 1231 | if ( empty($post->ID) || !in_array( $post->post_type, apply_filters( 'embed_cache_oembed_types', array( 'post', 'page' ) ) ) ) |
| 1232 | return; |
| 1233 | |
| 1234 | // Trigger a caching |
| 1235 | if ( !empty($post->post_content) ) { |
| 1236 | $this->post_ID = $post->ID; |
| 1237 | $this->usecache = false; |
| 1238 | |
| 1239 | $content = $this->run_shortcode( $post->post_content ); |
| 1240 | if ( get_option('embed_autourls') ) |