dvrom.eu

1. Get a pair of Flickr API keys here

2. Write the code to invoke the REST url through curl, parse the xml, and transform the result into a nice array:

	$ch=curl_init();
	$curl_post_data = array(
		"method" => "flickr.photos.search",
		"api_key" => $api_key,
		"lat" => $lat,
		"lon" => $lon,
		"radius_units" => "km",
		"has_geo" => "1",
		"radius" => $radius,
		"accuracy" => $accuracy,
		"min_taken_date" => $min_taken_date,
		"max_taken_date" => $max_taken_date,
	);
	curl_setopt($ch, CURLOPT_URL, 'http://api.flickr.com/services/rest/');
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
	curl_setopt($ch, CURLOPT_POST, true);
	curl_setopt($ch, CURLOPT_POSTFIELDS, $curl_post_data);
	$xmlstr=curl_exec($ch);
	curl_close($ch);
	$xml = new SimpleXMLElement($xmlstr);
	$totalresults=$xml->photos['total'];
	$photoresults = array();
	if ($totalresults!=0){
		foreach ($xml->photos->photo as $photo) {
			$photoinfotmp=array();
			$photoinfotmp['id']=$photo['id'];
			$photoinfotmp['owner']=$photo['owner'];
			$photoinfotmp['secret']=$photo['secret'];
			$photoinfotmp['server']=$photo['server'];
			$photoinfotmp['farm']=$photo['farm'];
			$photoinfotmp['title']=$photo['title'];
			$photoinfotmp['ispublic']=$photo['ispublic'];
			$photoinfotmp['isfriend']=$photo['isfriend'];
			$photoinfotmp['isfamily']=$photo['isfamily'];
			$photoinfotmp['url']="http://farm".$photoinfotmp['farm'];
                        $photoinfotmp['url']=$photoinfotmp['url'].$photoinfotmp['server'];
                        $photoinfotmp['url']=$photoinfotmp['url']."/".$photoinfotmp['id'];
                        $photoinfotmp['url']=$photoinfotmp['url']."_".$photo['secret'].".jpg";
			$photoresults[]=$photoinfotmp;
		}
	}

NOTE: For some reason, invoking the REST url with file_get_contents or curl with GET instead of POST was returning incorrect results…