Send one file attachment (e.g., PDF, DOC, HTML) to one recipient with Sendfax

<?php
 
/**************** Settings begin **************/
 
$username          = '';  // Insert your InterFAX username here
$password          = '';  // Insert your InterFAX password here
$faxnumber         = '';  // Enter the destination fax number here, e.g. +497116589658
$filename          = 'test.pdf'; // A file in your filesystem
$filetype          = 'PDF'; // File format; supported types are listed at 
                   // http://www.interfax.net/en/help/supported_file_types 
 
/**************** Settings end ****************/
 
// Open File
if( !($fp = fopen($filename, "r"))){
    // Error opening file
    echo "Error opening file";
    exit;
}
 
// Read data from the file into $data
$data = "";
while (!feof($fp)) $data .= fread($fp,1024);
fclose($fp);
 
 
$client = new SoapClient("http://ws.interfax.net/dfs.asmx?WSDL");
 
$params->Username  = $username;
$params->Password  = $password;
$params->FaxNumber = $faxnumber;
$params->FileData  = $data;
$params->FileType  = $filetype;
 
$result = $client->Sendfax($params);
echo $result->SendfaxResult; // returns the transactionID if successful
                             // or a negative number if otherwise
 
?>