Title: wp-includes/functions.php | Page 10 of 10 | Developer.WordPress.org --- # File: wp-includes/functions.php * function[xmlrpc_removepostdata()](https://developer.wordpress.org/reference/functions/xmlrpc_removepostdata/) * XML-RPC XML content without title and category elements. * Used by [2 functions](https://developer.wordpress.org/reference/functions/xmlrpc_removepostdata/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/functions/xmlrpc_removepostdata/#uses) | Source: [wp-includes/functions.php:820](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/functions.php#L820-L825) * function[wp_extract_urls()](https://developer.wordpress.org/reference/functions/wp_extract_urls/) * Uses RegEx to extract URLs from arbitrary content. * Used by [2 functions](https://developer.wordpress.org/reference/functions/wp_extract_urls/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/functions/wp_extract_urls/#uses) | Source: [wp-includes/functions.php:836](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/functions.php#L836-L867) * function[do_enclose()](https://developer.wordpress.org/reference/functions/do_enclose/) * Checks content for video and audio links to add as enclosures. * Used by [1 function](https://developer.wordpress.org/reference/functions/do_enclose/#used-by) | Uses [13 functions](https://developer.wordpress.org/reference/functions/do_enclose/#uses) | Source: [wp-includes/functions.php:888](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/functions.php#L888-L978) * function[wp_get_http_headers()](https://developer.wordpress.org/reference/functions/wp_get_http_headers/) * Retrieves HTTP Headers from URL. * Used by [1 function](https://developer.wordpress.org/reference/functions/wp_get_http_headers/#used-by) | Uses [4 functions](https://developer.wordpress.org/reference/functions/wp_get_http_headers/#uses) | Source: [wp-includes/functions.php:989](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/functions.php#L989-L1001) * function[date_i18n()](https://developer.wordpress.org/reference/functions/date_i18n/) * Retrieves the date in localized format, based on a sum of Unix timestamp and timezone offset in seconds. * Used by [19 functions](https://developer.wordpress.org/reference/functions/date_i18n/#used-by) | Uses [4 functions](https://developer.wordpress.org/reference/functions/date_i18n/#uses) | Source: [wp-includes/functions.php:179](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/functions.php#L179-L223) * function[is_new_day()](https://developer.wordpress.org/reference/functions/is_new_day/) * Determines whether the publish date of the current post in the loop is different from the publish date of the previous post in the loop. * Used by [1 function](https://developer.wordpress.org/reference/functions/is_new_day/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/functions/is_new_day/#uses) | Source: [wp-includes/functions.php:1018](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/functions.php#L1018-L1026) * hook[date_i18n](https://developer.wordpress.org/reference/hooks/date_i18n/) * Filters the date formatted based on the locale. * Used by [1 function](https://developer.wordpress.org/reference/hooks/date_i18n/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/date_i18n/#uses) | Source: [wp-includes/functions.php:220](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/functions.php#L220-L220) * function[build_query()](https://developer.wordpress.org/reference/functions/build_query/) * Builds a URL query based on an associative or indexed array. * Used by [3 functions](https://developer.wordpress.org/reference/functions/build_query/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/build_query/#uses) | Source: [wp-includes/functions.php:1048](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/functions.php#L1048-L1050) * function[number_format_i18n()](https://developer.wordpress.org/reference/functions/number_format_i18n/) * Converts float number to format based on the locale. * Used by [55 functions](https://developer.wordpress.org/reference/functions/number_format_i18n/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/number_format_i18n/#uses) | Source: [wp-includes/functions.php:424](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/functions.php#L424-L444) * function[_http_build_query()](https://developer.wordpress.org/reference/functions/_http_build_query/) * From php.net (modified by Mark Jaquith to behave like the native PHP5 function). * Used by [2 functions](https://developer.wordpress.org/reference/functions/_http_build_query/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/_http_build_query/#uses) | Source: [wp-includes/functions.php:1069](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/functions.php#L1069-L1105) * hook[number_format_i18n](https://developer.wordpress.org/reference/hooks/number_format_i18n/) * Filters the number formatted based on the locale. * Used by [1 function](https://developer.wordpress.org/reference/hooks/number_format_i18n/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/number_format_i18n/#uses) | Source: [wp-includes/functions.php:443](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/functions.php#L443-L443) * function[size_format()](https://developer.wordpress.org/reference/functions/size_format/) * Converts a number of bytes to the largest unit the bytes will fit into. * Used by [15 functions](https://developer.wordpress.org/reference/functions/size_format/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/size_format/#uses) | Source: [wp-includes/functions.php:467](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/functions.php#L467-L501) * function[get_weekstartend()](https://developer.wordpress.org/reference/functions/get_weekstartend/) * Gets the week start and end from the datetime or date string from MySQL. * Used by [1 function](https://developer.wordpress.org/reference/functions/get_weekstartend/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/get_weekstartend/#uses) | Source: [wp-includes/functions.php:587](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/functions.php#L587-L618) * function[maybe_unserialize()](https://developer.wordpress.org/reference/functions/maybe_unserialize/) * Unserializes data only if it was serialized. * Used by [10 functions](https://developer.wordpress.org/reference/functions/maybe_unserialize/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/maybe_unserialize/#uses) | Source: [wp-includes/functions.php:653](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/functions.php#L653-L659) * function[mysql2date()](https://developer.wordpress.org/reference/functions/mysql2date/) * Converts given MySQL date string into a different format. * Used by [29 functions](https://developer.wordpress.org/reference/functions/mysql2date/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/mysql2date/#uses) | Source: [wp-includes/functions.php:35](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/functions.php#L35-L57) * function[current_time()](https://developer.wordpress.org/reference/functions/current_time/) * Retrieves the current time based on specified type. * Used by [36 functions](https://developer.wordpress.org/reference/functions/current_time/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/current_time/#uses) | Source: [wp-includes/functions.php:78](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/functions.php#L78-L92) * function[get_dirsize()](https://developer.wordpress.org/reference/functions/get_dirsize/) * Gets the size of a directory. * Used by [1 function](https://developer.wordpress.org/reference/functions/get_dirsize/#used-by) | Uses [3 functions](https://developer.wordpress.org/reference/functions/get_dirsize/#uses) | Source: [wp-includes/functions.php:8901](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/functions.php#L8901-L8914) * function[recurse_dirsize()](https://developer.wordpress.org/reference/functions/recurse_dirsize/) * Gets the size of a directory recursively. * Used by [3 functions](https://developer.wordpress.org/reference/functions/recurse_dirsize/#used-by) | Uses [6 functions](https://developer.wordpress.org/reference/functions/recurse_dirsize/#uses) | Source: [wp-includes/functions.php:8938](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/functions.php#L8938-L9032) [Previous Page](https://developer.wordpress.org/reference/files/wp-includes/functions.php/page/9/?output_format=md) [1](https://developer.wordpress.org/reference/files/wp-includes/functions.php/?output_format=md)… [8](https://developer.wordpress.org/reference/files/wp-includes/functions.php/page/8/?output_format=md) [9](https://developer.wordpress.org/reference/files/wp-includes/functions.php/page/9/?output_format=md) 10