timer_stop() Retrieves or displays the time from the page start to when function is called.
wp_debug_mode() Sets PHP error reporting based on WordPress debug settings.
wp_set_lang_dir() Sets the location of the language directory.
require_wp_db() Loads the database class file and instantiates the `$wpdb` global.
wp_set_wpdb_vars() Sets the database table prefix and the format specifiers for database
wp_using_ext_object_cache() Toggles `$_wp_using_ext_object_cache` on and off without directly
wp_start_object_cache() Starts the WordPress object cache.
wp_not_installed() Redirects to the installer if WordPress is not installed.
wp_get_mu_plugins() Retrieves an array of must-use plugin files.
wp_get_active_and_valid_plugins() Retrieves an array of active and valid plugin files.
wp_skip_paused_plugins() Filters a given list of plugins, removing any paused plugins from it.
wp_get_active_and_valid_themes() Retrieves an array of active and valid themes.
wp_skip_paused_themes() Filters a given list of themes, removing any paused themes from it.
wp_is_recovery_mode() Determines whether WordPress is in Recovery Mode.
is_protected_endpoint() Determines whether we are currently on an endpoint that should be protected against WSODs.
is_protected_ajax_action() Determines whether we are currently handling an Ajax action that should be protected against WSODs.
wp_set_internal_encoding() Sets internal encoding.
wp_magic_quotes() Adds magic quotes to `$_GET`, `$_POST`, `$_COOKIE`, and `$_SERVER`.
shutdown_action_hook() Runs just before PHP shuts down execution.
wp_clone() Clones an object.
is_login() Determines whether the current request is for the login screen.
is_admin() Determines whether the current request is for an administrative interface page.
is_blog_admin() Determines whether the current request is for a site's administrative interface.
is_network_admin() Determines whether the current request is for the network administrative interface.
is_user_admin() Determines whether the current request is for a user admin screen.
is_multisite() Determines whether Multisite is enabled.
absint() Converts a value to non-negative integer.
get_current_blog_id() Retrieves the current site ID.
get_current_network_id() Retrieves the current network ID.
wp_load_translations_early() Attempts an early load of translations.
wp_installing() Checks or sets whether WordPress is in "installation" mode.
is_ssl() Determines if SSL is used.
wp_convert_hr_to_bytes() Converts a shorthand byte value to an integer byte value.
wp_is_ini_value_changeable() Determines whether a PHP ini value is changeable at runtime.
wp_doing_ajax() Determines whether the current request is a WordPress Ajax request.
wp_using_themes() Determines whether the current request should use themes.
wp_doing_cron() Determines whether the current request is a WordPress cron request.
is_wp_error() Checks whether the given variable is a WordPress Error.
wp_is_file_mod_allowed() Determines whether file modifications are allowed.
wp_start_scraping_edited_file_errors() Starts scraping edited file errors.
wp_finalize_scraping_edited_file_errors() Finalizes scraping for edited file errors.
wp_is_json_request() Checks whether current request is a JSON request, or is expecting a JSON response.
wp_is_jsonp_request() Checks whether current request is a JSONP request, or is expecting a JSONP response.
wp_is_json_media_type() Checks whether a string is a valid JSON Media Type.
wp_is_xml_request() Checks whether current request is an XML request, or is expecting an XML response.
wp_is_site_protected_by_basic_auth() Checks if this site is protected by HTTP Basic Auth.
wptexturize() Replaces common plain text characters with formatted entities.
wptexturize_primes() Implements a logic tree to determine whether or not "7'." represents seven feet,
_wptexturize_pushpop_element() Searches for disabled element tags. Pushes element to stack on tag open
wpautop() Replaces double line breaks with paragraph elements.