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(PHP 4 >= 4.2.0, PHP 5)

pg_num_fields -- Returns the number of fields in a result

Description

int pg_num_fields ( resource result )

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

Parameters

result

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

Return Values

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

Examples

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";
?>

The above example will output:

2 field(s) returned.

Related Function(s)

pg_query()

pg_query_params()

pg_execute()

pg_num_rows()

pg_affected_rows()