Title: wp-includes/deprecated.php | Page 6 of 9 | Developer.WordPress.org --- # File: wp-includes/deprecated.php * function[attribute_escape()](https://developer.wordpress.org/reference/functions/attribute_escape/) * Escaping for HTML attributes. * Used by [0 functions](https://developer.wordpress.org/reference/functions/attribute_escape/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/attribute_escape/#uses) | Source: [wp-includes/deprecated.php:2103](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/deprecated.php#L2103-L2106) * function[register_sidebar_widget()](https://developer.wordpress.org/reference/functions/register_sidebar_widget/) * Register widget for sidebar with backward compatibility. * Used by [0 functions](https://developer.wordpress.org/reference/functions/register_sidebar_widget/#used-by) | Uses [3 functions](https://developer.wordpress.org/reference/functions/register_sidebar_widget/#uses) | Source: [wp-includes/deprecated.php:2127](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/deprecated.php#L2127-L2145) * function[unregister_sidebar_widget()](https://developer.wordpress.org/reference/functions/unregister_sidebar_widget/) * Serves as an alias of wp_unregister_sidebar_widget(). * Used by [0 functions](https://developer.wordpress.org/reference/functions/unregister_sidebar_widget/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/unregister_sidebar_widget/#uses) | Source: [wp-includes/deprecated.php:2156](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/deprecated.php#L2156-L2159) * function[__ngettext()](https://developer.wordpress.org/reference/functions/__ngettext/) * Retrieve the plural or single form based on the amount. * Used by [0 functions](https://developer.wordpress.org/reference/functions/__ngettext/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/__ngettext/#uses) | Source: [wp-includes/deprecated.php:1826](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/deprecated.php#L1826-L1829) * function[__ngettext_noop()](https://developer.wordpress.org/reference/functions/__ngettext_noop/) * Register plural strings in POT file, but don’t translate them. * Used by [0 functions](https://developer.wordpress.org/reference/functions/__ngettext_noop/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/__ngettext_noop/#uses) | Source: [wp-includes/deprecated.php:1838](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/deprecated.php#L1838-L1842) * function[get_alloptions()](https://developer.wordpress.org/reference/functions/get_alloptions/) * Retrieve all autoload options, or all options if no autoloaded ones exist. * Used by [0 functions](https://developer.wordpress.org/reference/functions/get_alloptions/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/get_alloptions/#uses) | Source: [wp-includes/deprecated.php:1853](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/deprecated.php#L1853-L1856) * function[get_the_attachment_link()](https://developer.wordpress.org/reference/functions/get_the_attachment_link/) * Retrieve HTML content of attachment image with link. * Used by [0 functions](https://developer.wordpress.org/reference/functions/get_the_attachment_link/#used-by) | Uses [7 functions](https://developer.wordpress.org/reference/functions/get_the_attachment_link/#uses) | Source: [wp-includes/deprecated.php:1871](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/deprecated.php#L1871-L1886) * function[get_attachment_icon_src()](https://developer.wordpress.org/reference/functions/get_attachment_icon_src/) * Retrieve icon URL and Path. * Used by [1 function](https://developer.wordpress.org/reference/functions/get_attachment_icon_src/#used-by) | Uses [10 functions](https://developer.wordpress.org/reference/functions/get_attachment_icon_src/#uses) | Source: [wp-includes/deprecated.php:1899](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/deprecated.php#L1899-L1928) * function[get_author_name()](https://developer.wordpress.org/reference/functions/get_author_name/) * Retrieve the specified author’s preferred display name. * Used by [0 functions](https://developer.wordpress.org/reference/functions/get_author_name/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/get_author_name/#uses) | Source: [wp-includes/deprecated.php:1597](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/deprecated.php#L1597-L1600) * function[get_the_author_url()](https://developer.wordpress.org/reference/functions/get_the_author_url/) * Retrieve the URL to the home page of the author of the current post. * Used by [0 functions](https://developer.wordpress.org/reference/functions/get_the_author_url/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/get_the_author_url/#uses) | Source: [wp-includes/deprecated.php:1611](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/deprecated.php#L1611-L1614) * function[the_author_url()](https://developer.wordpress.org/reference/functions/the_author_url/) * Display the URL to the home page of the author of the current post. * Used by [0 functions](https://developer.wordpress.org/reference/functions/the_author_url/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/the_author_url/#uses) | Source: [wp-includes/deprecated.php:1623](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/deprecated.php#L1623-L1626) * function[get_the_author_ID()](https://developer.wordpress.org/reference/functions/get_the_author_id/) * Retrieve the ID of the author of the current post. * Used by [0 functions](https://developer.wordpress.org/reference/functions/get_the_author_id/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/get_the_author_id/#uses) | Source: [wp-includes/deprecated.php:1637](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/deprecated.php#L1637-L1640) * function[the_author_ID()](https://developer.wordpress.org/reference/functions/the_author_id/) * Display the ID of the author of the current post. * Used by [0 functions](https://developer.wordpress.org/reference/functions/the_author_id/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/the_author_id/#uses) | Source: [wp-includes/deprecated.php:1649](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/deprecated.php#L1649-L1652) * function[the_content_rss()](https://developer.wordpress.org/reference/functions/the_content_rss/) * Display the post content for the feed. * Used by [0 functions](https://developer.wordpress.org/reference/functions/the_content_rss/#used-by) | Uses [5 functions](https://developer.wordpress.org/reference/functions/the_content_rss/#uses) | Source: [wp-includes/deprecated.php:1683](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/deprecated.php#L1683-L1723) * hook[the_content_rss](https://developer.wordpress.org/reference/hooks/the_content_rss/) * Filters the post content in the context of an RSS feed. * Used by [1 function](https://developer.wordpress.org/reference/hooks/the_content_rss/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/the_content_rss/#uses) | Source: [wp-includes/deprecated.php:1694](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/deprecated.php#L1694-L1694) * function[make_url_footnote()](https://developer.wordpress.org/reference/functions/make_url_footnote/) * Strip HTML and put links at the bottom of stripped content. * Used by [1 function](https://developer.wordpress.org/reference/functions/make_url_footnote/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/make_url_footnote/#uses) | Source: [wp-includes/deprecated.php:1737](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/deprecated.php#L1737-L1753) * function[get_the_author_icq()](https://developer.wordpress.org/reference/functions/get_the_author_icq/) * Retrieve the ICQ number of the author of the current post. * Used by [0 functions](https://developer.wordpress.org/reference/functions/get_the_author_icq/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/get_the_author_icq/#uses) | Source: [wp-includes/deprecated.php:1492](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/deprecated.php#L1492-L1495) * function[_c()](https://developer.wordpress.org/reference/functions/_c/) * Retrieve translated string with vertical bar context * Used by [0 functions](https://developer.wordpress.org/reference/functions/_c/#used-by) | Uses [3 functions](https://developer.wordpress.org/reference/functions/_c/#uses) | Source: [wp-includes/deprecated.php:1776](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/deprecated.php#L1776-L1779) * function[the_author_icq()](https://developer.wordpress.org/reference/functions/the_author_icq/) * Display the ICQ number of the author of the current post. * Used by [0 functions](https://developer.wordpress.org/reference/functions/the_author_icq/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/the_author_icq/#uses) | Source: [wp-includes/deprecated.php:1504](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/deprecated.php#L1504-L1507) * function[translate_with_context()](https://developer.wordpress.org/reference/functions/translate_with_context/) * Translates $text like translate(), but assumes that the text contains a context after its last vertical bar. * Used by [0 functions](https://developer.wordpress.org/reference/functions/translate_with_context/#used-by) | Uses [3 functions](https://developer.wordpress.org/reference/functions/translate_with_context/#uses) | Source: [wp-includes/deprecated.php:1793](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/deprecated.php#L1793-L1796) * function[get_the_author_yim()](https://developer.wordpress.org/reference/functions/get_the_author_yim/) * Retrieve the Yahoo! IM name of the author of the current post. * Used by [0 functions](https://developer.wordpress.org/reference/functions/get_the_author_yim/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/get_the_author_yim/#uses) | Source: [wp-includes/deprecated.php:1518](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/deprecated.php#L1518-L1521) * function[_nc()](https://developer.wordpress.org/reference/functions/_nc/) * Legacy version of _n(), which supports contexts. * Used by [0 functions](https://developer.wordpress.org/reference/functions/_nc/#used-by) | Uses [3 functions](https://developer.wordpress.org/reference/functions/_nc/#uses) | Source: [wp-includes/deprecated.php:1814](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/deprecated.php#L1814-L1817) * function[the_author_yim()](https://developer.wordpress.org/reference/functions/the_author_yim/) * Display the Yahoo! IM name of the author of the current post. * Used by [0 functions](https://developer.wordpress.org/reference/functions/the_author_yim/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/the_author_yim/#uses) | Source: [wp-includes/deprecated.php:1530](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/deprecated.php#L1530-L1533) * function[get_the_author_msn()](https://developer.wordpress.org/reference/functions/get_the_author_msn/) * Retrieve the MSN address of the author of the current post. * Used by [0 functions](https://developer.wordpress.org/reference/functions/get_the_author_msn/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/get_the_author_msn/#uses) | Source: [wp-includes/deprecated.php:1544](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/deprecated.php#L1544-L1547) * function[the_author_msn()](https://developer.wordpress.org/reference/functions/the_author_msn/) * Display the MSN address of the author of the current post. * Used by [0 functions](https://developer.wordpress.org/reference/functions/the_author_msn/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/the_author_msn/#uses) | Source: [wp-includes/deprecated.php:1556](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/deprecated.php#L1556-L1559) * function[get_the_author_aim()](https://developer.wordpress.org/reference/functions/get_the_author_aim/) * Retrieve the AIM address of the author of the current post. * Used by [0 functions](https://developer.wordpress.org/reference/functions/get_the_author_aim/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/get_the_author_aim/#uses) | Source: [wp-includes/deprecated.php:1570](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/deprecated.php#L1570-L1573) * function[the_author_aim()](https://developer.wordpress.org/reference/functions/the_author_aim/) * Display the AIM address of the author of the current post. * Used by [0 functions](https://developer.wordpress.org/reference/functions/the_author_aim/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/the_author_aim/#uses) | Source: [wp-includes/deprecated.php:1582](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/deprecated.php#L1582-L1585) * function[get_the_author_firstname()](https://developer.wordpress.org/reference/functions/get_the_author_firstname/) * Retrieve the first name of the author of the current post. * Used by [0 functions](https://developer.wordpress.org/reference/functions/get_the_author_firstname/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/get_the_author_firstname/#uses) | Source: [wp-includes/deprecated.php:1388](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/deprecated.php#L1388-L1391) * function[the_author_firstname()](https://developer.wordpress.org/reference/functions/the_author_firstname/) * Display the first name of the author of the current post. * Used by [0 functions](https://developer.wordpress.org/reference/functions/the_author_firstname/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/the_author_firstname/#uses) | Source: [wp-includes/deprecated.php:1400](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/deprecated.php#L1400-L1403) * function[get_the_author_lastname()](https://developer.wordpress.org/reference/functions/get_the_author_lastname/) * Retrieve the last name of the author of the current post. * Used by [0 functions](https://developer.wordpress.org/reference/functions/get_the_author_lastname/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/get_the_author_lastname/#uses) | Source: [wp-includes/deprecated.php:1414](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/deprecated.php#L1414-L1417) [Previous Page](https://developer.wordpress.org/reference/files/wp-includes/deprecated.php/page/5/?output_format=md) [1](https://developer.wordpress.org/reference/files/wp-includes/deprecated.php/?output_format=md)… [4](https://developer.wordpress.org/reference/files/wp-includes/deprecated.php/page/4/?output_format=md) [5](https://developer.wordpress.org/reference/files/wp-includes/deprecated.php/page/5/?output_format=md) 6 [7](https://developer.wordpress.org/reference/files/wp-includes/deprecated.php/page/7/?output_format=md) [8](https://developer.wordpress.org/reference/files/wp-includes/deprecated.php/page/8/?output_format=md) [9](https://developer.wordpress.org/reference/files/wp-includes/deprecated.php/page/9/?output_format=md) [Next Page](https://developer.wordpress.org/reference/files/wp-includes/deprecated.php/page/7/?output_format=md)