pg_num_fields

(PHP 4 >= 4.2.0, PHP 5)

pg_num_fields — Returns the number of fields in a result

int pg_num_fields ( resource $result )

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

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

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

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

Пример #1 pg_num_fields() example


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

$num = pg_num_fields($result);

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

Результат выполнения данного примера:

2 field(s) returned.