$i->getUsernameInfo($userid);

$ php PaginationExample.php
object(InstagramAPI\UsernameInfoResponse)#278 (5) {
  ["megaphone"]=>
  NULL
  ["user"]=>
  object(InstagramAPI\User)#260 (46) {
    ["username"]=>
    string(20) "mona_of_green_gables"
    ["has_anonymous_profile_picture"]=>
    bool(false)
    ["is_favorite"]=>
    bool(false)
    ["profile_pic_url"]=>
    string(85) "http://scontent.cdninstagram.com/t51.2885-19/11909374_962415803801353_153711560_a.jpg"
    ["full_name"]=>
    string(10) "Mona Jalal"
    ["pk"]=>
    string(8) "53112486"
    ["is_verified"]=>
    bool(false)
    ["is_private"]=>
    bool(false)
    ["coeff_weight"]=>
    int(0)
    ["friendship_status"]=>
    NULL
    ["hd_profile_pic_versions"]=>
    NULL
    ["byline"]=>
    NULL
    ["search_social_context"]=>
    NULL
    ["unseen_count"]=>
    NULL
    ["mutual_followers_count"]=>
    NULL
    ["follower_count"]=>
    int(708)
    ["social_context"]=>
    NULL
    ["media_count"]=>
    int(1941)
    ["following_count"]=>
    int(305)
    ["is_business"]=>
    bool(false)
    ["usertags_count"]=>
    int(27)
    ["profile_context"]=>
    NULL
    ["biography"]=>
    string(110) "My account is temporarily public due to developing some apps using the Instagram API.  Please mind your words!"
    ["geo_media_count"]=>
    int(0)
    ["is_unpublished"]=>
    NULL
    ["allow_contacts_sync"]=>
    NULL
    ["show_feed_biz_conversion_icon"]=>
    bool(false)
    ["profile_pic_id"]=>
    NULL
    ["auto_expand_chaining"]=>
    NULL
    ["can_boost_post"]=>
    bool(false)
    ["is_profile_action_needed"]=>
    bool(false)
    ["has_chaining"]=>
    bool(true)
    ["include_direct_blacklist_status"]=>
    bool(true)
    ["can_see_organic_insights"]=>
    bool(false)
    ["can_convert_to_business"]=>
    bool(true)
    ["show_business_conversion_icon"]=>
    bool(false)
    ["show_conversion_edit_entry"]=>
    bool(true)
    ["show_insights_terms"]=>
    bool(false)
    ["hd_profile_pic_url_info"]=>
    object(stdClass)#264 (3) {
      ["url"]=>
      string(85) "http://scontent.cdninstagram.com/t51.2885-19/11909374_962415803801353_153711560_a.jpg"
      ["height"]=>
      int(150)
      ["width"]=>
      int(150)
    }
    ["usertag_review_enabled"]=>
    bool(false)
    ["is_needy"]=>
    bool(false)
    ["external_url"]=>
    string(21) "http://monajalal.com/"
    ["external_lynx_url"]=>
    string(128) "http://l.instagram.com/?u=http%3A%2F%2Fmonajalal.com%2F&e=ATMWChZaLT-vOKXK-mAy1pbJW8PUedbhujIyHCilfhXqMEB5WRlihrbo9MganuuHHcfqGA"
    ["status"]=>
    NULL
    ["message"]=>
    NULL
    ["fullResponse"]=>
    NULL
  }
  ["status"]=>
  string(2) "ok"
  ["message"]=>
  NULL
  ["fullResponse"]=>
  object(stdClass)#262 (2) {
    ["user"]=>
    object(stdClass)#27 (30) {
      ["pk"]=>
      int(53112486)
      ["follower_count"]=>
      int(708)
      ["following_count"]=>
      int(305)
      ["is_needy"]=>
      bool(false)
      ["is_verified"]=>
      bool(false)
      ["include_direct_blacklist_status"]=>
      bool(true)
      ["profile_pic_url"]=>
      string(85) "http://scontent.cdninstagram.com/t51.2885-19/11909374_962415803801353_153711560_a.jpg"
      ["is_profile_action_needed"]=>
      bool(false)
      ["has_chaining"]=>
      bool(true)
      ["external_lynx_url"]=>
      string(128) "http://l.instagram.com/?u=http%3A%2F%2Fmonajalal.com%2F&e=ATMWChZaLT-vOKXK-mAy1pbJW8PUedbhujIyHCilfhXqMEB5WRlihrbo9MganuuHHcfqGA"
      ["hd_profile_pic_url_info"]=>
      object(stdClass)#264 (3) {
        ["url"]=>
        string(85) "http://scontent.cdninstagram.com/t51.2885-19/11909374_962415803801353_153711560_a.jpg"
        ["height"]=>
        int(150)
        ["width"]=>
        int(150)
      }
      ["show_business_conversion_icon"]=>
      bool(false)
      ["full_name"]=>
      string(10) "Mona Jalal"
      ["show_feed_biz_conversion_icon"]=>
      bool(false)
      ["show_insights_terms"]=>
      bool(false)
      ["can_create_sponsor_tags"]=>
      bool(false)
      ["can_convert_to_business"]=>
      bool(true)
      ["external_url"]=>
      string(21) "http://monajalal.com/"
      ["is_business"]=>
      bool(false)
      ["usertags_count"]=>
      int(27)
      ["geo_media_count"]=>
      int(0)
      ["can_see_organic_insights"]=>
      bool(false)
      ["can_boost_post"]=>
      bool(false)
      ["biography"]=>
      string(110) "My account is temporarily public due to developing some apps using the Instagram API.  Please mind your words!"
      ["username"]=>
      string(20) "mona_of_green_gables"
      ["has_anonymous_profile_picture"]=>
      bool(false)
      ["usertag_review_enabled"]=>
      bool(false)
      ["show_conversion_edit_entry"]=>
      bool(true)
      ["media_count"]=>
      int(1941)
      ["is_private"]=>
      bool(false)
    }
    ["status"]=>
    string(2) "ok"
  }
}