第一次用php设置foursquare api

I try to get venues by foursquare api. The steps that I tried are:

  • registered my app;
  • obtain access_token;
  • download the foursquare-aync library

this is the code that I try to used but it didn't work:

require_once("Api_Foursquare_EpiCurl");
require_once("Api_Foursquare_EpiFoursquare");
require_once("Api_Foursquare_EpiSequence");

$fsObj = new EpiFoursquare($clientId, $clientSecret, $accessToken);
$venue = $fsObj->get('/venues/search', array('ll' => "{$myLat},{$myLng}"));

In particular I didn't understand the functionality of the callback that I set up in the registration. Thanks!

I got it to work with this:

$consumer_key = 'YOURS';
$consumer_secret = 'YOURS';

//Includes the foursquare-asyc library files                                                                       
require_once('EpiCurl.php');
require_once('EpiSequence.php');
require_once('EpiFoursquare.php');

try{
  $foursquareObj = new EpiFoursquare($consumer_key, $consumer_secret);
  $venue = $foursquareObj->get('/venues/search',array('ll'=>'{your-lat},{your-long}'));
  var_dump($venue);
} catch (Execption $e) {
  //If there is a problem throw an exception                                                                       
}

dumps out expected loc data from 4Square.

I'm using January 06, 2011 vers of EpiCurl, EpiSequence, and February 25, 2011 ver of EpiFoursquare.

The call back URL is where Foursquare directs the user after they successfully authenticate with the Foursquare service. So if you're doing local development (using WAMP + php for example) set your callback address to http://localhost/YOUR_PAGE_NAME.php

So what's gonna happen is this;

  • Someone visits your page
  • Your page prompts them with a link which points to Foursquare (this link has in it your application's clientId + secret, letting foursquare know that this user wishes to subscribe to your application)
  • Foursqaure prompts the user to log in and allow the application requesting access

  • Foursquare redirects and passes a token back to the external application, this token can then be used for all subsequent requests on behalf of the user

    I hope this helps somewhat.

Although I notice you're probably using this tutorial - http://www.joesiewert.com/2010/04/how-to-use-the-foursquare-api-with-oauth-and-php/

Which is now out of date. Also I've found in the past couple of days the that Foursquare-async library is throwing errors for me too, and I don't know why. I've posted here for help; http://groups.google.com/group/foursquare-api/browse_thread/thread/cd258a78d8073f86/ed5ff3f9fed206ed#ed5ff3f9fed206ed

Andy