curl --request POST \
  --url "https://siteadresiniz.example/Files/Controllers/ControllersAll.php?main=Variants&container=VariantsAddController" \
  --header "X-API-Key: $ZONELY_API_KEY" \
  --header "Content-Type: application/x-www-form-urlencoded" \
  --data-urlencode 'identifier=ALAN_DEGERI' \
  --data-urlencode 'name=ALAN_DEGERI' \
  --data-urlencode 'type=ALAN_DEGERI' \
  --data-urlencode 'description=ALAN_DEGERI' \
  --data-urlencode 'option_name=ALAN_DEGERI' \
  --data-urlencode 'option_value=ALAN_DEGERI' \
  --data-urlencode 'option_price=ALAN_DEGERI'

const options = {
  method: 'POST',
  headers: {'X-API-Key': '<api-key>', 'Content-Type': 'application/x-www-form-urlencoded'},
  body: new URLSearchParams({
    identifier: '<string>',
    name: '<string>',
    type: '<string>',
    description: '<string>',
    option_name: '<string>',
    option_value: '<string>',
    option_price: '<string>'
  })
};

fetch('https://siteadresiniz.example/Files/Controllers/ControllersAll.php', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));