| _drupal_get_last_caller | drupal/core/includes/errors.inc | Gets the last caller from a backtrace. | 5 |  | 
          
                  | _drupal_html_to_mail_urls | drupal/core/includes/mail.inc | Keeps track of URLs and replaces them with placeholder tokens. | 1 | 1 | 
          
                  | _drupal_html_to_text_clean | drupal/core/includes/mail.inc | Replaces non-quotation markers from a given piece of indentation with spaces. | 1 | 1 | 
          
                  | _drupal_html_to_text_pad | drupal/core/includes/mail.inc | Pads the last line with the given character. | 1 |  | 
          
                  | _drupal_http_use_proxy | drupal/core/includes/common.inc | Helper function for determining hosts excluded from needing a proxy. | 1 |  | 
          
                  | _drupal_initialize_db_test_prefix | drupal/core/includes/bootstrap.inc | In a test environment, get the test db prefix and set it in $databases. | 1 |  | 
          
                  | _drupal_load_stylesheet | drupal/core/includes/common.inc | Loads stylesheets recursively and returns contents with corrected paths. |  | 1 | 
          
                  | _drupal_log_error | drupal/core/includes/errors.inc | Logs a PHP error or exception and displays an error page in fatal cases. | 2 |  | 
          
                  | _drupal_maintenance_theme | drupal/core/includes/theme.maintenance.inc | Sets up the theming system for maintenance page. | 1 | 1 | 
          
                  | _drupal_render_exception_safe | drupal/core/includes/errors.inc | Renders an exception error message without further exceptions. | 3 |  | 
          
                  | _drupal_schema_initialize | drupal/core/includes/schema.inc | Fills in required default values for table definitions from hook_schema(). | 3 |  | 
          
                  | _drupal_session_close | drupal/core/includes/session.inc | Session handler assigned by session_set_save_handler(). |  | 1 | 
          
                  | _drupal_session_delete_cookie | drupal/core/includes/session.inc | Deletes the session cookie. | 1 |  | 
          
                  | _drupal_session_destroy | drupal/core/includes/session.inc | Session handler assigned by session_set_save_handler(). |  | 1 | 
          
                  | _drupal_session_garbage_collection | drupal/core/includes/session.inc | Session handler assigned by session_set_save_handler(). |  | 1 | 
          
                  | _drupal_session_open | drupal/core/includes/session.inc | Session handler assigned by session_set_save_handler(). |  | 1 | 
          
                  | _drupal_session_read | drupal/core/includes/session.inc | Reads an entire session from the database (internal use only). |  | 1 | 
          
                  | _drupal_session_write | drupal/core/includes/session.inc | Writes an entire session to the database (internal use only). | 1 | 1 | 
          
                  | _drupal_set_preferred_header_name | drupal/core/includes/bootstrap.inc | Sets the preferred name for the HTTP header. | 3 |  | 
          
                  | _drupal_shutdown_function | drupal/core/includes/bootstrap.inc | Executes registered shutdown functions. |  | 1 | 
          
                  | _drupal_theme_initialize | drupal/core/includes/theme.inc | Initialize the theme system given already loaded information. This
function is useful to initialize a theme when no database is present. | 2 |  | 
          
                  | _drupal_wrap_mail_line | drupal/core/includes/mail.inc | Wraps words on a single line. | 1 | 1 | 
          
                  | _external_url_is_local | drupal/core/includes/common.inc | Determines if an external URL points to this Drupal installation. | 1 |  | 
          
                  | _field_create_entity_from_ids | drupal/core/modules/field/field.module | Assembles a partial entity structure with initial IDs. | 5 |  | 
          
                  | _field_extra_fields_pre_render | drupal/core/modules/field/field.module | Pre-render callback: Adjusts weights and visibility of non-field elements. |  | 2 | 
          
                  | _field_filter_items | drupal/core/modules/field/field.module | Filters out empty field values. | 3 |  | 
          
                  | _field_filter_xss_allowed_tags | drupal/core/modules/field/field.module | Returns a list of tags allowed by field_filter_xss(). | 2 |  | 
          
                  | _field_filter_xss_display_allowed_tags | drupal/core/modules/field/field.module | Returns a human-readable list of allowed tags for display in help texts. | 2 |  | 
          
                  | _field_form_state_parents | drupal/core/modules/field/field.form.inc | Returns the location of processing information within $form_state. | 2 |  | 
          
                  | _field_info_collate_types | drupal/core/modules/field/field.info.inc | Collates all information on field types, widget types and related structures. | 2 | 1 | 
          
                  | _field_info_collate_types_reset | drupal/core/modules/field/field.info.inc | Clears collated information on field and widget types and related structures. | 1 |  | 
          
                  | _field_info_field_cache | drupal/core/modules/field/field.info.inc | Retrieves the Drupal\field\FieldInfo object for the current request. | 8 |  | 
          
                  | _field_invoke | drupal/core/modules/field/field.attach.inc | Invoke a field hook. | 10 |  | 
          
                  | _field_invoke_default | drupal/core/modules/field/field.attach.inc | Invoke field.module's version of a field hook. | 3 |  | 
          
                  | _field_invoke_formatter_target | drupal/core/modules/field/field.attach.inc | Defines a 'target function' for field_invoke_method(). | 2 |  | 
          
                  | _field_invoke_get_instances | drupal/core/modules/field/field.attach.inc | Retrieves a list of instances to operate on. | 5 |  | 
          
                  | _field_invoke_multiple | drupal/core/modules/field/field.attach.inc | Invokes a field hook across fields on multiple entities. | 6 |  | 
          
                  | _field_invoke_multiple_default | drupal/core/modules/field/field.attach.inc | Invoke field.module's version of a field hook on multiple entities. |  |  | 
          
                  | _field_invoke_widget_target | drupal/core/modules/field/field.attach.inc | Defines a 'target function' for field_invoke_method(). | 3 |  | 
          
                  | _field_language_suggestion | drupal/core/modules/field/field.multilingual.inc | Process the language code suggestion based on the available language codes. | 4 |  | 
          
                  | _field_sort_items | drupal/core/modules/field/field.module | Sorts items in a field according to user drag-and-drop reordering. |  |  | 
          
                  | _field_sort_items_helper | drupal/core/modules/field/field.module | Callback for usort() within _field_sort_items(). |  | 1 | 
          
                  | _field_sort_items_value_helper | drupal/core/modules/field/field.module | Callback for usort() within theme_field_multiple_value_form(). |  | 2 | 
          
                  | _field_sql_storage_columnname | drupal/core/modules/field/modules/field_sql_storage/field_sql_storage.module | Generates a column name for a field data table. | 14 |  | 
          
                  | _field_sql_storage_indexname | drupal/core/modules/field/modules/field_sql_storage/field_sql_storage.module | Generates an index name for a field data table. | 2 |  | 
          
                  | _field_sql_storage_revision_tablename | drupal/core/modules/field/modules/field_sql_storage/field_sql_storage.module | Generates a table name for a field revision archive table. | 23 | 1 | 
          
                  | _field_sql_storage_schema | drupal/core/modules/field/modules/field_sql_storage/field_sql_storage.module | Returns the database schema for a field. | 6 |  | 
          
                  | _field_sql_storage_tablename | drupal/core/modules/field/modules/field_sql_storage/field_sql_storage.module | Generates a table name for a field data table. | 26 | 1 | 
          
                  | _field_test_field_storage_query_sort_helper | drupal/core/modules/field/tests/modules/field_test/field_test.storage.inc | Sort helper for field_test_field_storage_query(). |  | 1 | 
          
                  | _field_test_storage_data | drupal/core/modules/field/tests/modules/field_test/field_test.storage.inc | Helper function: stores or retrieves data from the 'storage backend'. | 10 |  |