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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 |
|---|---|
| 3456 | * |
| 3457 | * @since 3.5.0 |
| 3458 | * |
| 3459 | * @param string $output Adjacent image HTML markup. |
| 3460 | * @param int $attachment_id Attachment ID |
| 3461 | * @param string|int[] $size Requested image size. Can be any registered image size name, or |
| 3462 | * an array of width and height values in pixels (in that order). |
| 3463 | * @param string $text Link text. |
| 3464 | */ |
| 3465 | echo apply_filters( "{$adjacent}_image_link", $output, $attachment_id, $size, $text ); |
| 3466 | } |
| 3467 | |
| 3468 | /** |
| 3469 | * Retrieves taxonomies attached to given the attachment. |
| 3470 | * |
| 3471 | * @since 2.5.0 |
| 3472 | * @since 4.7.0 Introduced the `$output` parameter. |
| 3473 | * |
| 3474 | * @param int|array|object $attachment Attachment ID, data array, or data object. |