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.

Nota:

This function used to be called pg_numfields().

Parámetros

result

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

Valores devueltos

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

Ejemplos

Ejemplo #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 sería:

2 field(s) returned.

Ver también