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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 |
|---|---|
| 3626 | * |
| 3627 | * @since 3.5.0 |
| 3628 | * |
| 3629 | * @param string $output Adjacent image HTML markup. |
| 3630 | * @param int $attachment_id Attachment ID |
| 3631 | * @param string|int[] $size Requested image size. Can be any registered image size name, or |
| 3632 | * an array of width and height values in pixels (in that order). |
| 3633 | * @param string $text Link text. |
| 3634 | */ |
| 3635 | return apply_filters( "{$adjacent}_image_link", $output, $attachment_id, $size, $text ); |
| 3636 | } |
| 3637 | |
| 3638 | /** |
| 3639 | * Displays next or previous image link that has the same post parent. |
| 3640 | * |
| 3641 | * Retrieves the current attachment object from the $post global. |
| 3642 | * |
| 3643 | * @since 2.5.0 |
| 3644 | * |