PostgreSQL
PHP Manual

pg_num_fields

(PHP 4 >= 4.2.0, PHP 5)

pg_num_fields — Returns the number of fields in a result

Descripción

int pg_num_fields ( resource $result )

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

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

Lista de parámetros

result

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

Valores retornados

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

Ejemplos

Example#1 pg_num_fields() example

<?php
$result 
pg_query($conn"SELECT 1, 2");

$num pg_num_fields($result);

echo 
$num " field(s) returned.\n";
?>

El resultado del ejemplo seria:

2 field(s) returned.

Ver también


PostgreSQL
PHP Manual