How can PHP code (function) be output to an HTML page and actually process it?

Question

css

There is an HTML page, with input, select(option), input(submit), etc. tags. I want to make sure that the code that is written in PHP works correctly and allows the user to download data on the same page on which he is located.

PHP code:

if($_POST['clause'] == 'submits')
  {
    header('Content-Type: text/plain; charset=utf-8');
    header('Content-Type: application/octet-stream');
    header('Content-disposition: attachment; filename=SocialHelperParsing.txt');
    header('Expires: 0');
    header('Cache-Control: must-revalidate');
    header('Pragma: private');
    echo parserVK(); // Функция, в которой есть данные, которые необходимо выдать пользователю для сохранения на устройство.
    exit();
  }

The submit input has an onclick="something()" handler.

JS script:

function something(){
          var sort_res = $('select[name=\'sortResults\'] option:selected').val();
          var clause = 'submits';
          
           $.post(myapi.php', {'sort_res':sort_res, 'clause': clause}, function(response) {
           $('#downloadArea').html(response); // #downloadArea - это пустой <div>
              });
          };

The question is, what am I doing wrong? It just returns the result of echo, but there is no writing to the file and no way to download it. Thanks in advance.

Answer 1

effect name Smoke Transitions

Answer 2

Don't do it via ajax, just build the link you want. For example:

<a href='/your/script.php?clause=submits' target='_blank'>Скачать</a>