Руководство по PHP
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# pg_num_fields

(PHP 4 >= 4.2.0, PHP 5)

pg_num_fields -- Returns the number of fields in a result

## Описание

int pg_num_fields ( resource result )

pg_num_fields() returns the number of fields (columns) in a PostgreSQL result resource.

> Замечание: This function used to be called pg_numfields().

## Список параметров

result

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

## Возвращаемые значения

The number of fields (columns) in the result. On error, -1 is returned.

## Примеры

Пример 1. pg_num_fields() example

`<?php $result = pg_query($conn, "SELECT 1, 2"); $num = pg_num_fields($result); echo $num . " field(s) returned.\n"; ?>`

Результат выполнения данного примера:

    2 field(s) returned.

## Смотрите также

pg_num_rows()
pg_affected_rows()

Пред. | Начало | След.
pg_meta_data | Уровень выше | pg_num_rows