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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 |
---|---|
3812 | * |
3813 | * @since 3.5.0 |
3814 | * |
3815 | * @param string $output Adjacent image HTML markup. |
3816 | * @param int $attachment_id Attachment ID |
3817 | * @param string|int[] $size Requested image size. Can be any registered image size name, or |
3818 | * an array of width and height values in pixels (in that order). |
3819 | * @param string $text Link text. |
3820 | */ |
3821 | return apply_filters( "{$adjacent}_image_link", $output, $attachment_id, $size, $text ); |
3822 | } |
3823 |
|
3824 | /** |
3825 | * Displays next or previous image link that has the same post parent. |
3826 | * |
3827 | * Retrieves the current attachment object from the $post global. |
3828 | * |
3829 | * @since 2.5.0 |
3830 | * |