PHP Create Word Document

<?php
//-----This Sections is all of the data for the request email----
 
//Get Data from the Form
 
$from = $_POST['email'];
$company = $_POST['company'];
$firstname = $_POST['firstname'];
$lastname = $_POST['lastname'];
$phone = $_POST['phonenumber'];
$software = $_POST['program'];
$version = $_POST['version'];
$sr = $_POST['sr'];
$filename = sprintf("2-%10s.doc",$sr);
$srnumber = sprintf ("2-%10s", $sr);
 
$string =
 
header("Content-Type: application/vnd.ms-word");
header("Expires: 0");
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header("content-disposition: attachment;filename=$filename");
 
echo (" Fist Name: $firstname
    Last Name: $lastname
    Company:   $company
    Phone:     $phone
    From:      $from
    Software:  $software
    Version:   $version
    SR Number: $srnumber
    ");
 
$echo_string = "
    Fist Name: &nbsp $firstname<br />
    Last Name: &nbsp $lastname<br />
    Company: &nbsp $company<br />
    Phone:&nbsp $phone<br />
    From: &nbsp $from <br />
    Software: &nbsp $software<br />
    Version: &nbsp $version<br />
    Request: &nbsp $srnumber<br />
    File Name: &nbsp $filename<br />";
 
echo $echo_string;

function generateDocsFromTemplate( $templatePath, $newFileName, $stringToReplace, $replacementString ){

    $template = fopen($templatePath, "r");
    $contents = fread($template, filesize($templatePath));

    // This block takes care of matching the length mismatch
    // Always make sure the replacement code in the template
    // is longer than the new string.
    $clientCodeLength = strlen($clientCode);
    $replacementLength = strlen($stringToReplace);
    $difference = $replacementLength - $clientCodeLength;

    for( $i=0; $i<$difference; $i++ ) {
        $clientCode .= chr(0);
    }

    $newcont = str_replace( $stringToReplace, $replacementString, $contents );

    $outputFileName = $newFileName . '.doc'; // Extension can be (.docx)

    file_put_contents( $outputFileName, $newcont);

    fclose( $template );

}