This function is EXPERIMENTAL. The behaviour of this function, the name of this function, and anything else documented about this function may change in a future release of PHP without notice. Be warned and use this function at your own risk.
dbplus_getlock() will request a write lock on the specified tuple. It will return zero on success or a non-zero error code, especially DBPLUS_ERR_WLOCKED, on failure.
See also dbplus_freelock(), dbplus_freerlocks(), and dbplus_freealllocks().