title: How to perform drop() using MongoDB drivers for php 7?
body: <p>How to perform drop() or remove() and other functions by using MongoDB drivers for php 7? </p>
  
  <p>I refered
  <a href="https://docs.mongodb.org/v3.0/reference/method/js-collection/" rel="nofollow">https://docs.mongodb.org/v3.0/reference/method/js-collection/</a></p>
  
  <p>but, I am not getting much documentation for PHongo (MongoDB driver for PHP 7).</p>
  
  <p>Thank you in advance.</p>