Title: wp-includes/load.php | Page 2 of 3 | Developer.WordPress.org --- # File: wp-includes/load.php * function[wp_is_file_mod_allowed()](https://developer.wordpress.org/reference/functions/wp_is_file_mod_allowed/) * Determines whether file modifications are allowed. * Used by [5 functions](https://developer.wordpress.org/reference/functions/wp_is_file_mod_allowed/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/wp_is_file_mod_allowed/#uses) | Source: [wp-includes/load.php:1829](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/load.php#L1829-L1839) * function[wp_doing_ajax()](https://developer.wordpress.org/reference/functions/wp_doing_ajax/) * Determines whether the current request is a WordPress Ajax request. * Used by [22 functions](https://developer.wordpress.org/reference/functions/wp_doing_ajax/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/wp_doing_ajax/#uses) | Source: [wp-includes/load.php:1745](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/load.php#L1745-L1754) * hook[wp_doing_ajax](https://developer.wordpress.org/reference/hooks/wp_doing_ajax/) * Filters whether the current request is a WordPress Ajax request. * Used by [1 function](https://developer.wordpress.org/reference/hooks/wp_doing_ajax/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/wp_doing_ajax/#uses) | Source: [wp-includes/load.php:1753](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/load.php#L1753-L1753) * function[wp_is_ini_value_changeable()](https://developer.wordpress.org/reference/functions/wp_is_ini_value_changeable/) * Determines whether a PHP ini value is changeable at runtime. * Used by [2 functions](https://developer.wordpress.org/reference/functions/wp_is_ini_value_changeable/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/functions/wp_is_ini_value_changeable/#uses) | Source: [wp-includes/load.php:1713](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/load.php#L1713-L1736) * function[get_current_network_id()](https://developer.wordpress.org/reference/functions/get_current_network_id/) * Retrieves the current network ID. * Used by [22 functions](https://developer.wordpress.org/reference/functions/get_current_network_id/#used-by) | Uses [4 functions](https://developer.wordpress.org/reference/functions/get_current_network_id/#uses) | Source: [wp-includes/load.php:1494](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/load.php#L1494-L1506) * hook[enable_maintenance_mode](https://developer.wordpress.org/reference/hooks/enable_maintenance_mode/) * Filters whether to enable maintenance mode. * Used by [1 function](https://developer.wordpress.org/reference/hooks/enable_maintenance_mode/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/enable_maintenance_mode/#uses) | Source: [wp-includes/load.php:474](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/load.php#L474-L474) * hook[enable_wp_debug_mode_checks](https://developer.wordpress.org/reference/hooks/enable_wp_debug_mode_checks/) * Filters whether to allow the debug mode check to occur. * Used by [1 function](https://developer.wordpress.org/reference/hooks/enable_wp_debug_mode_checks/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/enable_wp_debug_mode_checks/#uses) | Source: [wp-includes/load.php:609](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/load.php#L609-L609) * function[wp_installing()](https://developer.wordpress.org/reference/functions/wp_installing/) * Checks or sets whether WordPress is in “installation” mode. * Used by [47 functions](https://developer.wordpress.org/reference/functions/wp_installing/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/functions/wp_installing/#uses) | Source: [wp-includes/load.php:1633](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/load.php#L1633-L1649) * function[wp_get_server_protocol()](https://developer.wordpress.org/reference/functions/wp_get_server_protocol/) * Returns the HTTP protocol sent by the server. * Used by [2 functions](https://developer.wordpress.org/reference/functions/wp_get_server_protocol/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/functions/wp_get_server_protocol/#uses) | Source: [wp-includes/load.php:15](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/load.php#L15-L23) * function[get_current_blog_id()](https://developer.wordpress.org/reference/functions/get_current_blog_id/) * Retrieves the current site ID. * Used by [63 functions](https://developer.wordpress.org/reference/functions/get_current_blog_id/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/get_current_blog_id/#uses) | Source: [wp-includes/load.php:1481](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/load.php#L1481-L1485) * function[wp_set_internal_encoding()](https://developer.wordpress.org/reference/functions/wp_set_internal_encoding/) * Sets internal encoding. * Used by [0 functions](https://developer.wordpress.org/reference/functions/wp_set_internal_encoding/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/wp_set_internal_encoding/#uses) | Source: [wp-includes/load.php:1266](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/load.php#L1266-L1274) * function[wp_load_translations_early()](https://developer.wordpress.org/reference/functions/wp_load_translations_early/) * Attempts an early load of translations. * Used by [16 functions](https://developer.wordpress.org/reference/functions/wp_load_translations_early/#used-by) | Uses [3 functions](https://developer.wordpress.org/reference/functions/wp_load_translations_early/#uses) | Source: [wp-includes/load.php:1524](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/load.php#L1524-L1619) * function[wp_magic_quotes()](https://developer.wordpress.org/reference/functions/wp_magic_quotes/) * Adds magic quotes to `$_GET`, `$_POST`, `$_COOKIE`, and `$_SERVER`. * Used by [0 functions](https://developer.wordpress.org/reference/functions/wp_magic_quotes/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/wp_magic_quotes/#uses) | Source: [wp-includes/load.php:1285](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/load.php#L1285-L1294) * function[shutdown_action_hook()](https://developer.wordpress.org/reference/functions/shutdown_action_hook/) * Runs just before PHP shuts down execution. * Used by [0 functions](https://developer.wordpress.org/reference/functions/shutdown_action_hook/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/shutdown_action_hook/#uses) | Source: [wp-includes/load.php:1302](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/load.php#L1302-L1311) * hook[shutdown](https://developer.wordpress.org/reference/hooks/shutdown/) * Fires just before PHP shuts down execution. * Used by [1 function](https://developer.wordpress.org/reference/hooks/shutdown/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/shutdown/#uses) | Source: [wp-includes/load.php:1308](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/load.php#L1308-L1308) * function[wp_clone()](https://developer.wordpress.org/reference/functions/wp_clone/) * Clones an object. * Used by [0 functions](https://developer.wordpress.org/reference/functions/wp_clone/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/functions/wp_clone/#uses) | Source: [wp-includes/load.php:1322](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/load.php#L1322-L1325) * function[is_admin()](https://developer.wordpress.org/reference/functions/is_admin/) * Determines whether the current request is for an administrative interface page. * Used by [73 functions](https://developer.wordpress.org/reference/functions/is_admin/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/functions/is_admin/#uses) | Source: [wp-includes/load.php:1356](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/load.php#L1356-L1364) * function[is_blog_admin()](https://developer.wordpress.org/reference/functions/is_blog_admin/) * Determines whether the current request is for a site’s administrative interface. * Used by [3 functions](https://developer.wordpress.org/reference/functions/is_blog_admin/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/functions/is_blog_admin/#uses) | Source: [wp-includes/load.php:1380](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/load.php#L1380-L1388) * function[is_network_admin()](https://developer.wordpress.org/reference/functions/is_network_admin/) * Determines whether the current request is for the network administrative interface. * Used by [16 functions](https://developer.wordpress.org/reference/functions/is_network_admin/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/functions/is_network_admin/#uses) | Source: [wp-includes/load.php:1407](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/load.php#L1407-L1415) * function[is_user_admin()](https://developer.wordpress.org/reference/functions/is_user_admin/) * Determines whether the current request is for a user admin screen. * Used by [6 functions](https://developer.wordpress.org/reference/functions/is_user_admin/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/functions/is_user_admin/#uses) | Source: [wp-includes/load.php:1431](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/load.php#L1431-L1439) * function[is_multisite()](https://developer.wordpress.org/reference/functions/is_multisite/) * Determines whether Multisite is enabled. * Used by [173 functions](https://developer.wordpress.org/reference/functions/is_multisite/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/functions/is_multisite/#uses) | Source: [wp-includes/load.php:1448](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/load.php#L1448-L1458) * function[wp_maintenance()](https://developer.wordpress.org/reference/functions/wp_maintenance/) * Dies with a maintenance message when conditions are met. * Used by [0 functions](https://developer.wordpress.org/reference/functions/wp_maintenance/#used-by) | Uses [4 functions](https://developer.wordpress.org/reference/functions/wp_maintenance/#uses) | Source: [wp-includes/load.php:400](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/load.php#L400-L421) * function[wp_get_active_and_valid_plugins()](https://developer.wordpress.org/reference/functions/wp_get_active_and_valid_plugins/) * Retrieves an array of active and valid plugin files. * Used by [1 function](https://developer.wordpress.org/reference/functions/wp_get_active_and_valid_plugins/#used-by) | Uses [8 functions](https://developer.wordpress.org/reference/functions/wp_get_active_and_valid_plugins/#uses) | Source: [wp-includes/load.php:1013](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/load.php#L1013-L1049) * function[timer_start()](https://developer.wordpress.org/reference/functions/timer_start/) * Starts the WordPress micro-timer. * Used by [0 functions](https://developer.wordpress.org/reference/functions/timer_start/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/functions/timer_start/#uses) | Source: [wp-includes/load.php:504](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/load.php#L504-L510) * function[timer_stop()](https://developer.wordpress.org/reference/functions/timer_stop/) * Retrieves or displays the time from the page start to when function is called. * Used by [0 functions](https://developer.wordpress.org/reference/functions/timer_stop/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/timer_stop/#uses) | Source: [wp-includes/load.php:527](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/load.php#L527-L544) * function[wp_debug_mode()](https://developer.wordpress.org/reference/functions/wp_debug_mode/) * Sets PHP error reporting based on WordPress debug settings. * Used by [0 functions](https://developer.wordpress.org/reference/functions/wp_debug_mode/#used-by) | Uses [3 functions](https://developer.wordpress.org/reference/functions/wp_debug_mode/#uses) | Source: [wp-includes/load.php:578](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/load.php#L578-L648) * function[wp_set_lang_dir()](https://developer.wordpress.org/reference/functions/wp_set_lang_dir/) * Sets the location of the language directory. * Used by [0 functions](https://developer.wordpress.org/reference/functions/wp_set_lang_dir/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/functions/wp_set_lang_dir/#uses) | Source: [wp-includes/load.php:663](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/load.php#L663-L697) * function[require_wp_db()](https://developer.wordpress.org/reference/functions/require_wp_db/) * Loads the database class file and instantiates the `$wpdb` global. * Used by [0 functions](https://developer.wordpress.org/reference/functions/require_wp_db/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/require_wp_db/#uses) | Source: [wp-includes/load.php:706](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/load.php#L706-L725) * function[wp_set_wpdb_vars()](https://developer.wordpress.org/reference/functions/wp_set_wpdb_vars/) * Sets the database table prefix and the format specifiers for database table columns. * Used by [0 functions](https://developer.wordpress.org/reference/functions/wp_set_wpdb_vars/#used-by) | Uses [6 functions](https://developer.wordpress.org/reference/functions/wp_set_wpdb_vars/#uses) | Source: [wp-includes/load.php:739](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/load.php#L739-L797) * function[wp_using_ext_object_cache()](https://developer.wordpress.org/reference/functions/wp_using_ext_object_cache/) * Toggles `$_wp_using_ext_object_cache` on and off without directly touching global. * Used by [13 functions](https://developer.wordpress.org/reference/functions/wp_using_ext_object_cache/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/functions/wp_using_ext_object_cache/#uses) | Source: [wp-includes/load.php:810](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/load.php#L810-L820) [Previous Page](https://developer.wordpress.org/reference/files/wp-includes/load.php/?output_format=md) [1](https://developer.wordpress.org/reference/files/wp-includes/load.php/?output_format=md) 2 [3](https://developer.wordpress.org/reference/files/wp-includes/load.php/page/3/?output_format=md) [Next Page](https://developer.wordpress.org/reference/files/wp-includes/load.php/page/3/?output_format=md)