Hi,
I read your requirement and clearly understood that you want to integrate Twilio API in your website.
I had integrated Twilio API multiple times in past, so i have better idea about how Twilio services works.
I will build your project in more secure and reliable framework of PHP I.e Laravel or Yii2.
I can surely able to complete your project within time and your budget.
Please connect me over chat so we can discuss more about requirement and proceed further with solution.
Thanks,