applicant-site/public/json.php

<?php
header('Content-Type: application/json; charset=utf-8');

if(isset($_POST['ajx'])) {
    if($_POST['ajx']=='get_fak_info') {

    }
    if($_POST['ajx']=='get_napr') {
        if(isset($_POST['format'])&&$_POST['format']=='html'){
            $out['html'] = $_POST['predmets'];

        }
        ;
    }
    echo json_encode($out);
}
//echo '<table><tr><td>1</td><td>2</td></tr></table>';