how to check if client already exists in remoting api

Hi,
I have multi-server setup with ispconfig 3.0.5.4p8, and was wondering how to check if a client record alredy exisits using the remoting api, for example :

Code:

<?php

require 'soap_config.php';


$client = new SoapClient(null, array('location' => $soap_location,
        'uri'      => $soap_uri,
        'trace' => 1,
        'exceptions' => 1));


try {
    if($session_id = $client->login($username, $password)) {
        echo 'Logged successfull. Session ID:'.$session_id.'<br />';
    }

    //* Set the function parameters.
    $reseller_id = 0; // this id has to be 0 if the client shall not be assigned to admin or if the client is a reseller
    $params = array(
        'company_name' => 'awesomecompany',
        'contact_name' => 'name',
        'customer_no' => '1',
        'vat_id' => '1',
        'street' => 'fleetstreet',
        'zip' => '21337',
        'city' => 'london',
        'state' => 'bavaria',
        'country' => 'GB',
        'telephone' => '123456789',
        'mobile' => '987654321',
        'fax' => '546718293',
        'email' => '[email protected]',
        'internet' => '',
        'icq' => '111111111',
        'notes' => 'awesome',
        'default_mailserver' => 1,
        'web_php_options' => 'no',   
        'ssh_chroot' => 'no',
        'username' => 'guy3',
        'password' => 'brush',
        'language' => 'en',
        'usertheme' => 'default',
        'template_master' => 2,
        'template_additional' => '',
        'created_at' => 0
    );

    $affected_rows = $client->client_add($session_id, $reseller_id, $params);

    echo "Client: ".$affected_rows."<br>";
   
   
if ($affected_rows < 1){
    echo "record not added";
}
else
{
    echo "record added";
}
    if($client->logout($session_id)) {
        echo 'Logged out.<br />';
    }


} catch (SoapFault $e) {
    echo $client->__getLastResponse();
    die('SOAP Error: '.$e->getMessage());
}

?>

thanks for your time.

 

Hi Till,
thanks for your reply.