# pg_fetch_result

(PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)

pg_fetch_result — Returns values from a result instance

### Descripción

pg_fetch_result(PgSql\Result `$result`, string|false|null `$row`, mixed `$field`): string|false|null
pg_fetch_result(PgSql\Result `$result`, mixed `$field`): string|false|null

pg_fetch_result() returns the value of a particular row and field (column) in an PgSql\Result instance.

> Nota:

> This function used to be called pg_result().

### Parámetros

`result`

  An PgSql\Result instance, 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.

### Valores devueltos

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.

### Historial de cambios

Versión | Descripción
--- | ---
8.3.0 | `row` is now nullable.
8.1.0 | The `result` parameter expects an PgSql\Result instance now; previously, a recurso was expected.

### Ejemplos

Ejemplo #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";
?>`

El resultado del ejemplo sería:

    First field in the second row is: 2

### Ver también

- pg_query() - Ejecutar una consulta
- pg_fetch_array() - Fetch a row as an array