Documentation & API reference
Functions
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| Name |
Location |
Description | Direct uses | Strings |
|---|---|---|---|---|
| drupal_error_levels |
drupal/ |
Maps PHP error constants to watchdog severity levels. | 1 | |
| _drupal_error_handler_real |
drupal/ |
Provides custom PHP error handling. | 1 | |
| _drupal_decode_exception |
drupal/ |
Decodes an exception and retrieves the correct caller. | 5 | |
| _drupal_render_exception_safe |
drupal/ |
Renders an exception error message without further exceptions. | 3 | |
| error_displayable |
drupal/ |
Determines whether an error should be displayed. | 4 | |
| _drupal_log_error |
drupal/ |
Logs a PHP error or exception and displays an error page in fatal cases. | 2 | |
| _drupal_get_last_caller |
drupal/ |
Gets the last caller from a backtrace. | 5 | |
| system_default_date_formats |
drupal/ |
Provides a default system list of date formats for system_date_formats(). | 1 | |
| db_query |
drupal/ |
Executes an arbitrary query string against the active database. | 128 | 2 |
| db_query_range |
drupal/ |
Executes a query against the active database, restricted to a range. | 13 | 1 |
| db_query_temporary |
drupal/ |
Executes a SELECT query string and saves the result set to a temporary table. | 2 | |
| db_insert |
drupal/ |
Returns a new InsertQuery object for the active database. | 3 | |
| db_merge |
drupal/ |
Returns a new MergeQuery object for the active database. | ||
| db_update |
drupal/ |
Returns a new UpdateQuery object for the active database. | 1 | |
| db_delete |
drupal/ |
Returns a new DeleteQuery object for the active database. | 3 | |
| db_truncate |
drupal/ |
Returns a new TruncateQuery object for the active database. | 1 | |
| db_select |
drupal/ |
Returns a new SelectQuery object for the active database. | 113 | |
| db_transaction |
drupal/ |
Returns a new transaction object for the active database. | 17 | |
| db_set_active |
drupal/ |
Sets a new active database. | 2 | |
| db_escape_table |
drupal/ |
Restricts a dynamic table name to safe characters. | 1 | |
| db_escape_field |
drupal/ |
Restricts a dynamic column or constraint name to safe characters. | ||
| db_like |
drupal/ |
Escapes characters that work as wildcard characters in a LIKE pattern. | 6 | |
| db_driver |
drupal/ |
Retrieves the name of the currently active database driver. | 2 | |
| db_close |
drupal/ |
Closes the active database connection. | 1 | |
| db_next_id |
drupal/ |
Retrieves a unique id. | 4 | |
| db_or |
drupal/ |
Returns a new DatabaseCondition, set to "OR" all conditions together. | 10 | |
| db_and |
drupal/ |
Returns a new DatabaseCondition, set to "AND" all conditions together. | 2 | |
| db_xor |
drupal/ |
Returns a new DatabaseCondition, set to "XOR" all conditions together. | ||
| db_condition |
drupal/ |
Returns a new DatabaseCondition, set to the specified conjunction. | 1 | |
| db_create_table |
drupal/ |
Creates a new table from a Drupal table definition. | 37 | |
| db_field_names |
drupal/ |
Returns an array of field names from an array of key/index column specifiers. | ||
| db_index_exists |
drupal/ |
Checks if an index exists in the given table. | 9 | |
| db_table_exists |
drupal/ |
Checks if a table exists. | 24 | |
| db_field_exists |
drupal/ |
Checks if a column exists in the given table. | 6 | |
| db_find_tables |
drupal/ |
Finds all tables that are like the specified base table name. | 3 | |
| _db_create_keys_sql |
drupal/ |
|||
| db_rename_table |
drupal/ |
Renames a table. | 14 | |
| db_drop_table |
drupal/ |
Drops a table. | 25 | |
| db_add_field |
drupal/ |
Adds a new field to a table. | 25 | |
| db_drop_field |
drupal/ |
Drops a field. | 19 | |
| db_field_set_default |
drupal/ |
Sets the default value for a field. | 1 | |
| db_field_set_no_default |
drupal/ |
Sets a field to have no default value. | 1 | |
| db_add_primary_key |
drupal/ |
Adds a primary key to a database table. | 6 | |
| db_drop_primary_key |
drupal/ |
Drops the primary key of a database table. | 7 | |
| db_add_unique_key |
drupal/ |
Adds a unique key. | 3 | |
| db_drop_unique_key |
drupal/ |
Drops a unique key. | 6 | |
| db_add_index |
drupal/ |
Adds an index. | 33 | |
| db_drop_index |
drupal/ |
Drops an index. | 21 | |
| db_change_field |
drupal/ |
Changes a field definition. | 57 | |
| db_ignore_slave |
drupal/ |
Sets a session variable specifying the lag time for ignoring a slave server. | 2 |