pg_fetch_result

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

pg_fetch_resultReturns values from a result resource

Descrierea

pg_fetch_result ( resource $result , int $row , mixed $field ) : string
pg_fetch_result ( resource $result , mixed $field ) : string

pg_fetch_result() returns the value of a particular row and field (column) in a PostgreSQL result resource.

Notă:

This function used to be called pg_result().

Parametri

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.

Valorile întoarse

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.

Exemple

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");

$val pg_fetch_result($res10);

echo 
"First field in the second row is: "$val"\n";
?>

Exemplul de mai sus va afișa:

First field in the second row is: 2

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