title: laravel 5.4 update composer show warning PHP start up :unable to load dynamics library 'ext\php_pdo_oci.dll'
body: <p>I try to update composer by type composer update in command prompt , it take a long time and then this happens(see picture)</p>
  
  <p>PHP warning:<a href="https://i.stack.imgur.com/lpFMU.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/lpFMU.png" alt="enter image description here"></a>
   I don't know what wrong and how should i do?</p>