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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 |
|---|---|
| 1648 | * @param string $link_html The page link HTML output. |
| 1649 | * @param int|WP_Post $id Post ID or object. Can be 0 for the current global post. |
| 1650 | * @param string|int[] $size Requested image size. Can be any registered image size name, or |
| 1651 | * an array of width and height values in pixels (in that order). |
| 1652 | * @param bool $permalink Whether to add permalink to image. Default false. |
| 1653 | * @param bool $icon Whether to include an icon. |
| 1654 | * @param string|false $text If string, will be link text. |
| 1655 | * @param array|string $attr Array or string of attributes. |
| 1656 | */ |
| 1657 | return apply_filters( 'wp_get_attachment_link', "<a href='" . esc_url( $url ) . "'>$link_text</a>", $id, $size, $permalink, $icon, $text, $attr ); |
| 1658 | } |
| 1659 | |
| 1660 | /** |
| 1661 | * Wrap attachment in paragraph tag before content. |
| 1662 | * |
| 1663 | * @since 2.0.0 |
| 1664 | * |
| 1665 | * @param string $content |
| 1666 | * @return string |