Return the port number associated with the connection

Description

pg_port(?PgSql\Connection $connection = null): string

pg_port() returns the port number that the given PostgreSQL connection instance is connected to.

Parameters

connection

An PgSql\Connection instance. When connection is null, the default connection is used. The default connection is the last connection made by pg_connect() or pg_pconnect().

Warning

As of PHP 8.1.0, using the default connection is deprecated.

Return Values

A string containing the port number of the database server the connection is to, or empty string on error.

Changelog

Version	Description
8.1.0	The `connection` parameter expects an PgSql\Connection instance now; previously, a resource was expected.
8.0.0	`connection` is now nullable.

Examples

Example #1 pg_port() example


<?php
$pgsql_conn = pg_connect("dbname=mark host=localhost");

if ($pgsql_conn) {
   print "Successfully connected to port: " . pg_port($pgsql_conn) . "<br/>\n";
} else {
   print pg_last_error($pgsql_conn);
   exit;
}
?>