使用 PHP 连接 FourSquare API V2 [英] Connecting with FourSquare API V2 using PHP
问题描述
我正在使用 本指南 以获得快速而肮脏的 OAuth 身份验证，以便我可以使用 API.不幸的是，他的教程似乎参差不齐.在他的链接中找不到引用的 EpiOAuth.php 文件，我不得不进行谷歌搜索才能找到副本.在第一次运行 index.php 以获取我的令牌时，我在 index.php 中的 $results = $foursquareObj->getAuthorizeUrl() 行收到缺少参数"错误.即使手动放置我的回调 URL，我的令牌也会返回为h":
I'm using this guide to get a quick and dirty OAuth authentication so I can play around with the API. Unfortunately his tutorial seems spotty. The EpiOAuth.php file referenced wasn't found in his link and I had to do a google search to find a copy. Upon running index.php for the first time to get my token I received a 'missing parameter' error on the $results = $foursquareObj->getAuthorizeUrl() line in index.php. Even by manually placing my callback URL in, my token comes back as "h":
Login Via Foursquare
string(1) "h"
这显然是不对的.我(他)怎么做错了?
Which, obviously, isn't right. How am I (he) doing this wrong?
推荐答案
这不是对您问题的直接回答，但对于获取 OAuth 令牌非常简单.我刚刚开始使用foursquare，这就是我所拥有的.它不进行任何类型的错误检查，但它会获得一个 OAuth 令牌，允许您查看 API.
This isn't a direct answer to your question, but is pretty straight forward for getting an OAuth token. I'm just getting started with foursquare, and this is about all I've got. It does not do any kind of error checking, but it does get an OAuth token which allows you to poke at the API.
localhost/scripts/secrets.php
<?php
// insert your foursquare API keys
define('CLIENT_ID', 'YOUR_CLIENT_ID');
define('CLIENT_SECRET', 'YOUR_CLIENT_SECRET');
localhost/scripts/4sq_Login.php
<?php
// Foursquare login stage 1, build url and redirect
require_once('secrets.php'); //defines CLIENT_ID
// build $url
$url = 'https://foursquare.com/oauth2/authenticate';
$url .= '?client_id='.CLIENT_ID;
$url .= '&response_type=code';
$url .= '&redirect_uri=http://localhost/scripts/4sq_Callback.php'; // change to your 4sq callback
// redirect
header( 'Location: '.$url ) ;
localhost/scripts/4sq_Callback.php
<?php
// Foursquare login step 2, echo back $code from QUERY_STRING
require_once('secrets.php'); // defines CLIENT_ID & CLIENT_SECRET
// get $code from QUERY_STRING
parse_str($_SERVER['QUERY_STRING'], $query);
$code = $query['code'];
// build url
$url = 'https://foursquare.com/oauth2/access_token';
$url .= '?client_id='.CLIENT_ID;
$url .= '&client_secret='.CLIENT_SECRET;
$url .= '&grant_type=authorization_code';
$url .= '&redirect_uri=http://localhost/scripts/4sq_Callback.php'; //change to your 4sq callback
$url .= '&code='.$code;
// call to https://foursquare.com/oauth2/access_token with $code
$ch = curl_init();
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_URL, $url);
$result = curl_exec($ch);
curl_close($ch);
// $result value is json {access_token: ACCESS_TOKEN}
$values = json_decode($result, true);
$token = $values['access_token'];
// set access_token cookie (if you wish)
$expire = time()+2592000; // 30 days from now
setcookie("foursquare_token", $token, $expire, '/');
// crosswindow scripting to pass back $token
echo('<script type="text/javascript">');
echo('opener.set4sqKey("'.$token.'");');
echo('self.close();'); // close self
echo('</script>');
localhost/index.htm
<!DOCTYPE HTML>
<html>
<head>
<title>FourSquare test page...</title>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<script type="text/javascript">
<!--
var foursquareKey;
// Open foursquare login window.
function get4sqKey(){
if(!foursquareKey){
window.open('scripts/4sq_Login.php', 'foursquareAuth', 'width=960, height=548');
}
}
// called crosswindow by login window
function set4sqKey(key){
foursquareKey = key;
setTimeout('alert("Logged into Foursquare");', 1); // setTimeout makes alert non-blocking
}
// simple alert to display OAuth token
function showKey(){
alert(foursquareKey);
}
// -->
</script>
</head>
<body>
<a href="javascript:get4sqKey();">get4sqKey();</a> |
<a href="javascript:showKey();">showKey();</a>
</body>
</html>
我不擅长解释，所以我希望你能看到我在做什么，并在必要时可以在它的基础上进一步发展.
I'm not good at explaining, so I hope you can see what I'm doing, and can build on it as necessary.
(由于 PHP 处理本地文件系统，实际上最好将您的 secrets.php 重新定位到 Web 服务器路径之外的位置.以防万一:)
(Since PHP deals with the local file system it is actually preferable to relocate your secrets.php to a location outside of the web server path. Just in case :)
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