title: Check user have account in Instagram without redirecting abd login into instagram
body: <p>I am new here so please ignore by grammatical mistakes. i am working on the php site where we need to check whether user having account in Instagram or not by username and password, without redirecting to Instagram site nor login into Instagram site.</p>
  
  <p>Same as <a href="https://instagress.com/" rel="nofollow">https://instagress.com/</a></p>
  
  <p>After we signup, it asks instagram username and password, if we enter wrong username or password then it show error message. If details are correct then it show next page but we are not login in Instagram too. Can anyone help me?</p>