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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 |
|---|---|
| 1441 | * |
| 1442 | * @param string $link_html The page link HTML output. |
| 1443 | * @param int $id Post ID. |
| 1444 | * @param string|array $size Size of the image. Image size or array of width and height values (in that order). |
| 1445 | * Default 'thumbnail'. |
| 1446 | * @param bool $permalink Whether to add permalink to image. Default false. |
| 1447 | * @param bool $icon Whether to include an icon. Default false. |
| 1448 | * @param string|bool $text If string, will be link text. Default false. |
| 1449 | */ |
| 1450 | return apply_filters( 'wp_get_attachment_link', "<a href='$url'>$link_text</a>", $id, $size, $permalink, $icon, $text ); |
| 1451 | } |
| 1452 | |
| 1453 | /** |
| 1454 | * Wrap attachment in paragraph tag before content. |
| 1455 | * |
| 1456 | * @since 2.0.0 |
| 1457 | * |
| 1458 | * @param string $content |
| 1459 | * @return string |