If no error occurred - `SQLite3::lastErrorCode()` returns `0` (int zero)
(PHP 5 >= 5.3.0, PHP 7)
SQLite3::lastErrorCode — Returns the numeric result code of the most recent failed SQLite request
Returns the numeric result code of the most recent failed SQLite request.
此函数没有参数。
Returns an integer value representing the numeric result code of the most recent failed SQLite request.
If no error occurred - `SQLite3::lastErrorCode()` returns `0` (int zero)