86 lines
2.7 KiB
PHP
86 lines
2.7 KiB
PHP
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<?php
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// a PHP client library for pubsubhubbub
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// as defined at http://code.google.com/p/pubsubhubbub/
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// written by Josh Fraser | joshfraser.com | josh@eventvue.com
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// Released under Apache License 2.0
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class Publisher {
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protected $hub_url;
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protected $last_response;
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// create a new Publisher
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public function __construct($hub_url) {
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if (!isset($hub_url))
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throw new Exception('Please specify a hub url');
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if (!preg_match("|^https?://|i",$hub_url))
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throw new Exception('The specified hub url does not appear to be valid: '.$hub_url);
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$this->hub_url = $hub_url;
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}
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// accepts either a single url or an array of urls
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public function publish_update($topic_urls, $http_function = false) {
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if (!isset($topic_urls))
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throw new Exception('Please specify a topic url');
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// check that we're working with an array
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if (!is_array($topic_urls)) {
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$topic_urls = array($topic_urls);
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}
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// set the mode to publish
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$post_string = "hub.mode=publish";
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// loop through each topic url
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foreach ($topic_urls as $topic_url) {
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// lightweight check that we're actually working w/ a valid url
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if (!preg_match("|^https?://|i",$topic_url))
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throw new Exception('The specified topic url does not appear to be valid: '.$topic_url);
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// append the topic url parameters
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$post_string .= "&hub.url=".urlencode($topic_url);
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}
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// make the http post request and return true/false
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// easy to over-write to use your own http function
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if ($http_function)
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return $http_function($this->hub_url,$post_string);
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else
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return $this->http_post($this->hub_url,$post_string);
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}
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// returns any error message from the latest request
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public function last_response() {
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return $this->last_response;
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}
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// default http function that uses curl to post to the hub endpoint
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private function http_post($url, $post_string) {
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// add any additional curl options here
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$options = array(CURLOPT_URL => $url,
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CURLOPT_POST => true,
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CURLOPT_POSTFIELDS => $post_string,
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CURLOPT_USERAGENT => "PubSubHubbub-Publisher-PHP/1.0");
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$ch = curl_init();
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curl_setopt_array($ch, $options);
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$response = curl_exec($ch);
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$this->last_response = $response;
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$info = curl_getinfo($ch);
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curl_close($ch);
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// all good
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if ($info['http_code'] == 204)
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return true;
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return false;
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}
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}
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?>
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