pg_fetch_result

(PHP 4 >= 4.2.0, PHP 5)

pg_fetch_result — Returns values from a result resource

Описание

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.

Замечание: This function used to be called pg_result().

Список параметров

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 an int representing the field number to fetch. Fields are numbered from 0 upwards.

Возвращаемые значения

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.

Примеры

Пример #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";
?>

Результат выполнения данного примера:

First field in the second row is: 2

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