How to fix json?

Question

PHP

Collecting json for ajax request. Html markup makes it invalid, how to solve this problem?

$response = array(
            "html" => $template,
            "show" => 'true'
        );
      header('Content-type: application/json; charset=utf-8');
      $json = json_encode($response );

If I remove the html data in the array, then everything is fine, and ajax calmly parses everything. The error is from PHP.
In this form, for some reason, he does not understand in any way.

Answer 1

The only thing you can see is the quote conflict - HTML itself uses double quotes, and it's also wrapped in double quotes. Try like this
$json = json_encode($response, JSON_HEX_QUOT);