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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 |
|---|---|
| 3215 | /** |
| 3216 | * Filter the first-found post gallery. |
| 3217 | * |
| 3218 | * @since 3.6.0 |
| 3219 | * |
| 3220 | * @param array $gallery The first-found post gallery. |
| 3221 | * @param int|WP_Post $post Post ID or object. |
| 3222 | * @param array $galleries Associative array of all found post galleries. |
| 3223 | */ |
| 3224 | return apply_filters( 'get_post_gallery', $gallery, $post, $galleries ); |
| 3225 | } |
| 3226 | |
| 3227 | /** |
| 3228 | * Retrieve the image srcs from galleries from a post's content, if present |
| 3229 | * |
| 3230 | * @since 3.6.0 |
| 3231 | * |
| 3232 | * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global $post. |
| 3233 | * @return array A list of lists, each containing image srcs parsed. |