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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 |
|---|---|
| 3371 | * |
| 3372 | * @since 3.5.0 |
| 3373 | * |
| 3374 | * @param string $output Adjacent image HTML markup. |
| 3375 | * @param int $attachment_id Attachment ID |
| 3376 | * @param string|int[] $size Requested image size. Can be any registered image size name, or |
| 3377 | * an array of width and height values in pixels (in that order). |
| 3378 | * @param string $text Link text. |
| 3379 | */ |
| 3380 | echo apply_filters( "{$adjacent}_image_link", $output, $attachment_id, $size, $text ); |
| 3381 | } |
| 3382 | |
| 3383 | /** |
| 3384 | * Retrieves taxonomies attached to given the attachment. |
| 3385 | * |
| 3386 | * @since 2.5.0 |
| 3387 | * @since 4.7.0 Introduced the `$output` parameter. |
| 3388 | * |
| 3389 | * @param int|array|object $attachment Attachment ID, data array, or data object. |