PHP kézikönyv
Előző |  | Következő

# pg_fetch_result

(PHP 4 >= 4.2.0, PHP 5)

pg_fetch_result -- Returns values from a result resource

## Leírás

string pg_fetch_result ( resource result, int row, mixed field )
string pg_fetch_result ( resource result, mixed field )

pg_fetch_result() returns the value of a particular row and field (column) in a PostgreSQL result resource.

## Paraméterek

result

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

row

  Row number in result to fetch. Rows are numbered from 0 upwards. If omitted, next row is fetched.

field

  A string representing the name of the field (column) to fetch, otherwise and int representing the field number to fetch. Fields are numbered from 0 upwards.

## Visszatérési értékek

Boolean is returned as "t" or "f". All other types, including arrays are returned as strings formatted in the same default PostgreSQL manner that you would see in the psql program. Database NULL values are returned as `NULL`.

`FALSE` is returned if row exceeds the number of rows in the set, or on any other error.

## Példák

Példa 1. pg_fetch_result() example

`<?php $db = pg_connect("dbname=users user=me") || die(); $res = pg_query($db, "SELECT 1 UNION ALL SELECT 2"); $val = pg_fetch_result($res, 1, 0); echo "First field in the second row is: ", $val, "\n"; ?>`

A fenti példa a következő kimenetet adja:

    First field in the second row is: 2

## Lásd még

pg_query()
pg_fetch_array()

Előző | Tartalom | Következő
pg_Fetch_Object | Fel | pg_Fetch_Row