AUser0

try_files $uri.php $uri.html $uri/index.php =404;
fastcgi_pass unix:/run/php/php7.4-fpm.sock;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
include fastcgi_params;
include snippets/fastcgi-php.conf;

jQuery("select option[value='"+jQuery('h1').text()+"']").addClass('myclass');

$names = ["num1"=> "1-число:",  "num2"=> "2-число:"];
$default =  ["num1"=> "По умолчанию",  "num2"=> "По умолчанию"];
$equals = 0;

foreach($names as $key => $items){
    if(isset($_GET[$key]) && is_number($_GET[$key]) ){
        $default[$key] =  $_GET[$key];
    }
    echo "$items ".htmlentities($default[$key])."<br>\n";
}

$equals  = $default["num1"] * $default["num2"];
echo "Равно: ".$equals."<br>\n";