PHP kézikönyv
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# pg_last_oid

(PHP 4 >= 4.2.0, PHP 5)

pg_last_oid -- Returns the last row's OID

## Leírás

string pg_last_oid ( resource result )

pg_last_oid() is used to retrieve the OID assigned to an inserted row.

OID field became an optional field from PostgreSQL 7.2 and will not be present by default in PostgreSQL 8.1. When the OID field is not present in a table, the programmer must use pg_result_status() to check for successful insertion.

To get the value of a SERIAL field in an inserted row, it is necessary to use the PostgreSQL CURRVAL function, naming the sequence whose last value is required. If the name of the sequence is unknown, the pg_get_serial_sequence PostgreSQL 8.0 function is necessary.

PostgreSQL 8.1 has a function LASTVAL that returns the value of the most recently used sequence in the session. This avoids the need for naming the sequence, table or column altogether.

> Megjegyzés: This function used to be called pg_getlastoid().

## Paraméterek

result

  PostgreSQL query result resource, returned by pg_query(), pg_query_params() or pg_execute() (among others).

## Visszatérési értékek

A string containing the OID assigned to the most recently inserted row in the specified connection, or `FALSE` on error or no available OID.

## Példák

Példa 1. pg_last_oid() example

`<?php $pgsql_conn = pg_connect("dbname=mark host=localhost"); $res1 = pg_query("CREATE TABLE test (a INTEGER) WITH OIDS"); $res2 = pg_query("INSERT INTO test VALUES (1)"); $oid = pg_last_oid($res2); ?>`

## Lásd még

pg_query()
pg_result_status()

Előző | Tartalom | Következő
pg_last_notice | Fel | pg_lo_close