# pg_field_type_oid

(PHP 5 >= 5.1.0, PHP 7, PHP 8)

pg_field_type_oid — Returns the type ID (OID) for the corresponding field number

### Descripción

pg_field_type_oid(PgSql\Result `$result`, int `$field`): string|int

pg_field_type_oid() returns an integer containing the OID of the base type of the given `field` in the given `result` instance.

You can get more information about the field type by querying PostgreSQL's `pg_type` system table using the OID obtained with this function. The PostgreSQL format_type() function will convert a type OID into an SQL standard type name.

> Nota:

> If the field uses a PostgreSQL domain (rather than a basic type), it is the OID of the domain's underlying type that is returned, rather than the OID of the domain itself.

### Parámetros

`result`

  An PgSql\Result instance, returned by pg_query(), pg_query_params() or pg_execute()(among others).

`field`

  Field number, starting from 0.

### Valores devueltos

The OID of the field's base type.

### Historial de cambios

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

### Ejemplos

Ejemplo #1 Getting information about fields

`<?php
$dbconn = pg_connect("dbname=publisher") or die("Could not connect");
// Assume 'title' is a varchar type
$res = pg_query($dbconn, "select title from authors where author = 'Orwell'");
echo "Title field type OID: ", pg_field_type_oid($res, 0);
?>`

El resultado del ejemplo sería:

    Title field type OID: 1043

### Ver también

- pg_field_type() - Devuelve el nombre de tipo para el número de campo correspondiente
- pg_field_prtlen() - Returns the printed length
- pg_field_name() - Returns the name of a field