Api server

<?php

    if(isset($_POST['data'])){

        $f = fopen('users/'.date('d-m-Y-H:i:s').'.txt', 'w');
        fwrite($f, $_POST['data']);

        if(fclose($f)){
            echo json_encode(['status' => 'success']);
        }else{

            echo json_encode(['status' => 'error']);
        }
    }



?>