<?php

/*
	# sample usage
	
	$rsp = $flickr->call_method('flickr.photos.search', array(
                'auth_token' => $auth_token,
                'user_id' => 'me',
                'has_geo' => 1,
                'tags' => 'cameraphone',
                'min_taken_date' => $ago,
                'extras' => 'machine_tags,geo',
        ));
        
        foreach($rsp['photos']['photo'] as $photo) {
		....
	}

*/

class Flickr {
	function Flickr($api_key, $api_secret='') {
		$this->api_key = $api_key;
		$this->api_secret = $api_secret;
	}
	
	function call_method($method, $args=array()) {
        	$args['format'] = 'php_serial';
		$args['api_key'] = $this->api_key;
        	$args['method'] = $method;
        	
		if ($args['auth_token']) {
			$args['api_sig'] = $this->sign_args($args, $this->api_secret);
		}
		
		$encoded_params = array();
        
        	foreach ($args as $k => $v){
        		$encoded_params[] = urlencode($k).'='.urlencode($v);
        	}
        
        	$url = "http://api.flickr.com/services/rest/?".implode('&', $encoded_params);
        	$rsp = file_get_contents($url);
        	$rsp_obj = unserialize($rsp);
        	return $rsp_obj;
	}
	
	function sign_args($args, $secret) {
		ksort($args);

		$a = '';

		foreach ($args as $k => $v){
			$a .= $k . $v;
		}

		return md5($secret.$a);
	}
}


?>