1. Go to this page and download the library: Download ikosar/lmfa library. Choose the download type require.
2. Extract the ZIP file and open the index.php.
3. Add this code to the index.php.
<?php
require_once('vendor/autoload.php');
/* Start to develop here. Best regards https://php-download.com/ */
$face->setParameters(array(
'returnFaceId' => 'true', // Recommended : True
'returnFaceLandmarks' => 'false', // Very information about face sizes
'returnFaceAttributes' => 'age,gender,glasses,smile,noise,hair,accessories,emotion,makeup', // Your Requsted info
));