Instagram: How to get images using Instagram API

You can develop a web-app to show Instagram images/photos from other users accounts using API call. Instagram API is the easiest so far to me. At first you have to visit https://www.instagram.com/developer/ to create a developer account and then an application for API communication as below steps:

The most important link is https://www.instagram.com/developer which describes API procedures.

You can create a Application and then you have client id and client secret as below screenshot.

Below is the full PHP code snippet to get images/photos from Instagram using API call:

<?php
session_start();

include_once "CurlExecutor.php";

define("CLIENT_ID", "d1aa0f7.............................");
define("CLIENT_SECRET", "e972a4a.........................");
define("REDIRECT_URI", "http://localhost/ci/InstagramAPI/");

if (isset($_SESSION["access_token"])) {
    getRecentPhotos();
}
elseif (isset($_GET["code"])) {
    getAccessToken();
}
else {
    authentication();
}

function getRecentPhotos() {
    $user_id = $_SESSION["user_id"];
    $url = "https://api.instagram.com/v1/users/$user_id/media/recent/";
    $url = $url . "?access_token=" . $_SESSION["access_token"];
    $url = $url . "&count=5";
    $response = CurlExecutor::execute($url);
    $response["response"] = json_decode($response["response"]);
    if ($response["code"] != 200) {
        die("ERROR");
    }
    foreach ($response["response"]->data as $o) {
        echo "<a target='_blank' href='" . $o->link . "'>";
        echo "<img src='" . $o->images->low_resolution->url . "'/>";
        echo "</a>";
    }
}

function getAccessToken() {
    $post = array(
        "client_id" => CLIENT_ID,
        "client_secret" => CLIENT_SECRET,
        "grant_type" => "authorization_code",
        "redirect_uri" => REDIRECT_URI,
        "code" => $_GET["code"]
    );
    $response = CurlExecutor::execute("https://api.instagram.com/oauth/access_token", "POST", $post);
    $response["response"] = json_decode($response["response"]);
    CurlExecutor::prettyPrint($response);
    if ($response["code"] != 200) {
        die("ERROR");
    }
    $_SESSION["access_token"] = $response["response"]->access_token;
    $_SESSION["user_id"] = $response["response"]->user->id;
    header("Refresh:0; url=" . REDIRECT_URI);
}

function authentication() {
    $auth_url = "https://api.instagram.com/oauth/authorize/?" .
        "client_id=" . CLIENT_ID .
        "&redirect_uri=" . REDIRECT_URI .
        "&response_type=code";
    header("Refresh:0; url=$auth_url");
    exit();
}
?>

Authorization screen is as below screenshots (User will authorize this application and then forwarded to redirect URI with a one time code, you can use that code to get access token, and then you can get users photos as well as users basic info using those access token):

And output is as below: