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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 |
---|---|
2681 | * either 'next', or 'previous'. |
2682 | * |
2683 | * @since 3.5.0 |
2684 | * |
2685 | * @param string $output Adjacent image HTML markup. |
2686 | * @param int $attachment_id Attachment ID |
2687 | * @param string $size Image size. |
2688 | * @param string $text Link text. |
2689 | */ |
2690 | echo apply_filters( "{$adjacent}_image_link", $output, $attachment_id, $size, $text ); |
2691 | } |
2692 |
|
2693 | /** |
2694 | * Retrieves taxonomies attached to given the attachment. |
2695 | * |
2696 | * @since 2.5.0 |
2697 | * |
2698 | * @param int|array|object $attachment Attachment ID, data array, or data object. |
2699 | * @return array Empty array on failure. List of taxonomies on success. |