Converting files using PHP LibreOffice and the ncjoes/office-converter library

I am using ampps as a windows 10 apache server, my php version is 7.3. I downloaded it from the LibreOffice download page and installed it on my computer. Then I installed this library via composer https://github.com/ncjoes/office-converter. I try as in the example given, but it does not convert and gives an error. I would be very grateful if you could help me where I am wrong. Here is my code sample and the error I encountered:

<?php
if (!file_exists(__DIR__.'/vendor/autoload.php')) echo 'autoload.php mevcut değil!';
else require __DIR__.'/vendor/autoload.php';

use NcJoes\OfficeConverter\OfficeConverter;
use PHPUnit\Framework\TestCase;

class OfficeConverterTest extends TestCase
{
    /**
     * @var OfficeConverter $converter
     */
    private $converter;
    private $outDir;

    public function setUp()
    {
        parent::setUp();

        $DS = DIRECTORY_SEPARATOR;
        $file = __DIR__."{$DS}sources{$DS}test.docx";
        $this->outDir = __DIR__."{$DS}results";

        $this->converter = new OfficeConverter($file, $this->outDir);
    }

    public function testDocxToPdfConversion()
    {
        $output = $this->converter->convertTo('result.pdf');

        $this->assertFileExists($output);
    }

    public function testDocxToHtmlConversion()
    {
        $output = $this->converter->convertTo('result.html');

        $this->assertFileExists($output);
    }
}

$donustur = new OfficeConverterTest();
$donustur->testDocxToPdfConversion();
?>

Fatal error: Uncaught Error: Call to a member function convertTo() on null in C:\Program Files\Ampps\www\converter\converter.php:29 Stack trace: #0 C:\Program Files\Ampps\www\converter\converter.php(43): OfficeConverterTest->testDocxToPdfConversion() #1 {main} thrown in C:\Program Files\Ampps\www\converter\converter.php on line 29

Solution

When running tests, we are supposed to leave running them to phpunit, but you are trying to call manually (in last 2 lines of your code).

But if you insist on calling manually, change:

$donustur = new OfficeConverterTest();
$donustur->testDocxToPdfConversion();

Into:

$donustur = new OfficeConverterTest();
$donustur->setUp();
$donustur->testDocxToPdfConversion();

So that you call setUp() which phpunit would normally call for you automatically.

Example for page

If you want to use this logic on a Web-Page, it should look something like:

<?php
if (!file_exists(__DIR__.'/vendor/autoload.php')) echo 'autoload.php mevcut değil!';
else require __DIR__.'/vendor/autoload.php';

use NcJoes\OfficeConverter\OfficeConverter;

echo 'Converting...<br>';

$input = __DIR__ . '/test.docx';
$converter = new OfficeConverter($input, __DIR__.'/results');
$output = $converter->convertTo('result.pdf');

echo 'Saved at: ' . $output . '<br>';