(PHP 5, PHP 7 < 7.4.0)
ibase_drop_db — Drops a database
$connection = null): boolThis functions drops a database that was opened by either ibase_connect() or ibase_pconnect(). The database is closed and deleted from the server.
connectionAn InterBase link identifier. If omitted, the last opened link is assumed.
成功时返回 true， 或者在失败时返回 false。