php 한글 메뉴얼 도움말 검색 사이트 Returns values from a result resource [function.pg-fetch-result]

설명

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.

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

인수

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.

반환값

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.

예제

Example #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";
?>

위 예제의 출력:

First field in the second row is: 2

참고

pg_query() - Execute a query
pg_fetch_array() - Fetch a row as an array