(PHP 3 >= 3.0.8, PHP 4, PHP 5)
dba_delete() deletes the specified entry from the database.
The key of the entry which is deleted.
The database handler, returned by dba_open() or dba_popen().
Возвращает TRUE в случае успешного завершения или FALSE в случае возникновения ошибки.
Note that the memory is lost after doing this. If you had a key 'foo' with a value of 1000 bytes, that 1000 bytes is lost, and the DB file size will reflect this.