scriblr.php

<?php
class Scriblr {
	
	private $api_key;
	private $api_secret;
	private $publisher_id;
	private $method_family = NULL;
	public $http_status;
	public $last_api_call;
	
	function __construct($api_key, $api_secret, $publisher_id = NULL, $method_family = NULL) {
		$this->api_key = $api_key;
		$this->api_secret = $api_secret;
		$this->publisher_id = $publisher_id;
		$this->method_family = $method_family;
	}
	
	function __get($family) {
		$class_name = get_class($this);
		$ref = new $class_name($this->api_key, $this->api_secret, $this->publisher_id, $family);
		return $ref;
	}
	
	function __call($name, $args) {
		$parameters = (count($args) > 0) ? $args[0] : array();
		$parameters = array_merge($parameters, array(
			'method'  => isset($this->method_family) ? sprintf('%s.%s', $this->method_family, $name) : $name,
			'api_key' => $this->api_key
		));
		ksort($parameters);
		$api_sig = md5($this->api_secret.implode(array_map(function($key, $value) {
			return $key.$value;
		}, array_keys($parameters), array_values($parameters))));
		$parameters['api_sig'] = $api_sig;
		$query = http_build_query($parameters);
		$api_call = sprintf('http://api.scribd.com/api?%s', $query);
		return $this->request($api_call);
	}
	
	protected function request($api_url) {
		$curl_handle = curl_init();
		curl_setopt($curl_handle, CURLOPT_URL, $api_url);
		curl_setopt($curl_handle, CURLOPT_RETURNTRANSFER, true);
		$response = curl_exec($curl_handle);
		$this->http_status = curl_getinfo($curl_handle, CURLINFO_HTTP_CODE);
		curl_close($curl_handle);
		$this->last_api_call = $api_url;
		return $response;
	}
	
}