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Podręcznik PHP
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sesam_seek_row

(PHP 3 CVS only)

sesam_seek_row -- Set scrollable cursor mode for subsequent fetches

Description

bool sesam_seek_row ( string result_id, int whence [, int offset] )

result_id is a valid result id (select type queries only, and only if a "scrollable" cursor was requested when calling sesam_query()).

whence sets the global default value for the scrolling type, it specifies the scroll type to use in subsequent fetch operations on "scrollable" cursors, which can be set to the following predefined constants:

Tabela 1. Valid values for "whence" parameter

Value	Constant	Meaning
0	`SESAM_SEEK_NEXT`	read sequentially
1	`SESAM_SEEK_PRIOR`	read sequentially backwards
2	`SESAM_SEEK_FIRST`	fetch first row (after fetch, the default is set to `SESAM_SEEK_NEXT`)
3	`SESAM_SEEK_LAST`	fetch last row (after fetch, the default is set to `SESAM_SEEK_PRIOR`)
4	`SESAM_SEEK_ABSOLUTE`	fetch absolute row number given as `offset` (Zero-based. After fetch, the default is set to `SESAM_SEEK_ABSOLUTE`, and the offset value is auto-incremented)
5	`SESAM_SEEK_RELATIVE`	fetch relative to current scroll position, where `offset` can be a positive or negative offset value (this also sets the default "offset" value for subsequent fetches).

offset is an optional parameter which is only evaluated (and required) if whence is either SESAM_SEEK_RELATIVE or SESAM_SEEK_ABSOLUTE.

Poprzedni	Spis treści	Następny
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