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# pg_fetch_all_columns

(PHP 5 >= 5.1.0RC1)

pg_fetch_all_columns -- Fetches all rows in a particular result column as an array

## 说明

array pg_fetch_all_columns ( resource result [, int column] )

pg_fetch_all_columns() returns an array that contains all rows (records) in a particular column of the result resource.

> 注: 本函数对 PHP `NULL` 值设定 NULL 字段。

## 参数

result

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

column

  Column number, zero-based, to be retrieved from the result resource. Defaults to the first column if not specified.

## 返回值

An array with all values in the result column.

`FALSE` is returned if column is larger than the number of columns in the result, or on any other error.

## 范例

例子 1. pg_fetch_all_columns() example

`<?php $conn = pg_pconnect("dbname=publisher"); if (!$conn) { echo "An error occured.\n"; exit; } $result = pg_query($conn, "SELECT title, name, address FROM authors"); if (!$result) { echo "An error occured.\n"; exit; } // Get an array of all author names $arr = pg_fetch_all_columns($result, 1); var_dump($arr); ?>`

## 参见

pg_fetch_all()

后退 | 起点 | 前进
pg_execute | 上一级 | pg_fetch_all