What are the potential challenges of connecting PHP to an Informix database on separate servers?

One potential challenge of connecting PHP to an Informix database on separate servers is ensuring that the necessary network configurations are in place to allow communication between the two servers. This may involve setting up proper firewall rules, configuring the Informix server to accept external connections, and ensuring that the PHP server can reach the Informix server's IP address. 

<?php
$database = 'dbname@hostname:port';
$username = 'username';
$password = 'password';

$connection = ifx_connect($database, $username, $password);

if (!$connection) {
    die('Could not connect: ' . ifx_error());
}

echo 'Connected successfully';
ifx_close($connection);
?>

Keywords

PHP Informix database connection remote server authentication

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