Hi, You can get help from the following link- https://msdn.microsoft.com/office/office365/APi/contacts-rest-operations

I think, this should be helpful for you.

Please consume outlook Contacts API to fetch contact list.

Here is the URL to create app to get access token
https://dev.outlook.com/RestGettingStarted/Tutorial/php

Example:

public static function getContacts($access_token) {
  $getContactsUrl = self::$outlookApiUrl."/Me/Contacts?"
                    ."\$select=GivenName,Surname,EmailAddresses"
                    ."&\$orderby=GivenName"
                    ."&\$top=10";

  return self::makeApiCall($access_token, "GET", $getContactsUrl);
}

Hi There,

For this you will have to use outlook API and need to create App.

Please check below Link , They have shown step by step code that how you can import your outlook contacts in PHP

https://dev.outlook.com/RestGettingStarted/Tutorial/php

Please try the code and let me know if it works or not.
Thanks