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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 |
---|---|
3774 | * |
3775 | * @since 3.5.0 |
3776 | * |
3777 | * @param string $output Adjacent image HTML markup. |
3778 | * @param int $attachment_id Attachment ID |
3779 | * @param string|int[] $size Requested image size. Can be any registered image size name, or |
3780 | * an array of width and height values in pixels (in that order). |
3781 | * @param string $text Link text. |
3782 | */ |
3783 | return apply_filters( "{$adjacent}_image_link", $output, $attachment_id, $size, $text ); |
3784 | } |
3785 |
|
3786 | /** |
3787 | * Displays next or previous image link that has the same post parent. |
3788 | * |
3789 | * Retrieves the current attachment object from the $post global. |
3790 | * |
3791 | * @since 2.5.0 |
3792 | * |