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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 |
|---|---|
| 1696 | * @param string $link_html The page link HTML output. |
| 1697 | * @param int|WP_Post $post Post ID or object. Can be 0 for the current global post. |
| 1698 | * @param string|int[] $size Requested image size. Can be any registered image size name, or |
| 1699 | * an array of width and height values in pixels (in that order). |
| 1700 | * @param bool $permalink Whether to add permalink to image. Default false. |
| 1701 | * @param bool $icon Whether to include an icon. |
| 1702 | * @param string|false $text If string, will be link text. |
| 1703 | * @param array|string $attr Array or string of attributes. |
| 1704 | */ |
| 1705 | return apply_filters( 'wp_get_attachment_link', $link_html, $post, $size, $permalink, $icon, $text, $attr ); |
| 1706 | } |
| 1707 | |
| 1708 | /** |
| 1709 | * Wraps attachment in paragraph tag before content. |
| 1710 | * |
| 1711 | * @since 2.0.0 |
| 1712 | * |
| 1713 | * @param string $content |
| 1714 | * @return string |