(no version information, might be only in CVS)
PDO::errorInfo --
Fetch extended error information associated with the last operation on the database handle
返回值
PDO::errorInfo() returns an array of error information
about the last operation performed by this database handle. The array
consists of the following fields:
PDO::errorInfo() only retrieves error information for
operations performed directly on the database handle. If you create a
PDOStatement object through PDO::prepare() or
PDO::query() and invoke an error on the statement
handle, PDO::errorInfo() will not reflect the error
from the statement handle. You must call
PDOStatement::errorInfo() to return the error
information for an operation performed on a particular statement handle.