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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 |
|---|---|
| 3296 | * Filter the shortlink for a post. |
| 3297 | * |
| 3298 | * @since 3.0.0 |
| 3299 | * |
| 3300 | * @param string $shortlink Shortlink URL. |
| 3301 | * @param int $id Post ID, or 0 for the current post. |
| 3302 | * @param string $context The context for the link. One of 'post' or 'query', |
| 3303 | * @param bool $allow_slugs Whether to allow post slugs in the shortlink. Not used by default. |
| 3304 | */ |
| 3305 | return apply_filters( 'get_shortlink', $shortlink, $id, $context, $allow_slugs ); |
| 3306 | } |
| 3307 | |
| 3308 | /** |
| 3309 | * Inject rel=shortlink into head if a shortlink is defined for the current page. |
| 3310 | * |
| 3311 | * Attached to the wp_head action. |
| 3312 | * |
| 3313 | * @since 3.0.0 |
| 3314 | */ |