(PHP 4 <= 4.1.0, PECL dbplus >= 0.9)
dbplus_prev — Get previous tuple from relation
$relation
, array &$tuple
) : int
Reads the data for the previous tuple for the given
relation, makes it the current tuple and will pass
it back as an associative array in tuple.
Returns DBPLUS_ERR_NOERR on success or a db++ error
code on failure.
此函数是实验性的。此函数的表象，包括名称及其相关文档都可能在未来的 PHP 发布版本中未通知就被修改。使用本函数风险自担 。