Escapes a field name string.

Force all field names to be strictly alphanumeric-plus-underscore. For some database drivers, it may also wrap the field name in database-specific escape characters.

Return value

The sanitized field name string.

File

drupal-7.x/includes/database/database.inc, line 937

Core systems for the database layer.

Class

DatabaseConnection

Base Database API class.

Code

public function escapeField($field) {
  return preg_replace('/[^A-Za-z0-9_.]+/', '', $field);
}