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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 |
|---|---|
| 2054 | * |
| 2055 | * @param mixed $post Optional. Post ID or object. |
| 2056 | * @param boolean $html Whether to return HTML or data |
| 2057 | * @return string|array Gallery data and srcs parsed from the expanded shortcode |
| 2058 | */ |
| 2059 | function get_post_gallery( $post = 0, $html = true ) { |
| 2060 | $galleries = get_post_galleries( $post, $html ); |
| 2061 | $gallery = reset( $galleries ); |
| 2062 | |
| 2063 | return apply_filters( 'get_post_gallery', $gallery, $post, $galleries ); |
| 2064 | } |
| 2065 | |
| 2066 | /** |
| 2067 | * Retrieve the image srcs from galleries from a post's content, if present |
| 2068 | * |
| 2069 | * @since 3.6.0 |
| 2070 | * |
| 2071 | * @param mixed $post Optional. Post ID or object. |
| 2072 | * @return array A list of lists, each containing image srcs parsed |