Download all your file from Basecamp and organise them in folders

downloadFromBasecamp.php

<?
// make sure the folder of the script is writeble (0777)
$basecampUrl 	= '[YOUR BASECAMP URL HERE]'; 	// e.g. https://stelabouras.basecamphq.com/ (Don't forget the trailing slash!)
$apiKey 	= '[YOUR API KEY HERE]';	// e.g. one huge string (found in 'My info' in the Authentication tokens section)

function BasecampCall($endPoint, $usePrefix = true) {
		
	global $apiKey, $basecampUrl;

	// From: http://prattski.com/2008/10/22/basecamp-api-examples-using-php-and-curl-get/
	$session = curl_init();
	 
	$username		= $apiKey;
	$password 		= 'X';
	 
	curl_setopt($session, CURLOPT_URL, ($usePrefix == true ? $basecampUrl : "") . $endPoint);
	curl_setopt($session, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
	curl_setopt($session, CURLOPT_HTTPGET, 1);
	curl_setopt($session, CURLOPT_HEADER, false);
	curl_setopt($session, CURLOPT_HTTPHEADER, array('Accept: application/xml', 'Content-Type: application/xml'));
	curl_setopt($session, CURLOPT_RETURNTRANSFER, true);
	 
	curl_setopt($session,CURLOPT_USERPWD,$username . ":" . $password);
	 
	if(ereg("^(https)",$request)) curl_setopt($session,CURLOPT_SSL_VERIFYPEER,false);
	 
	$response = curl_exec($session);
	curl_close($session);

	return ($usePrefix ? simplexml_load_string($response) : $response);
}


$projects = BasecampCall('projects.xml');

// For each project take name and id
foreach($projects->project as $proj) {

	$pr = array(
		"id"	=> (string)$proj->id,
		"name"	=> (string)$proj->name
	);

	$n = 0;
	$i = 0;

	// Retrieve the attachments
	echo "\nSaving attachments for project: " . $pr['name'] . "...\n";

	@mkdir($pr['name']);

	$filesArray = array();

	do {

		$attachments = BasecampCall("projects/"  . $proj->id . "/attachments.xml?n=" . $n);

		if(count($attachments->attachment) > 0) {
			
			foreach($attachments->attachment as $attachment) {

				$file = pathinfo($attachment->name);
				
				@file_put_contents($pr['name'] . "/" . $file['filename'] . (in_array($file['filename'], $filesArray) ? "-" . rand() : "") . "." . $file['extension'], BasecampCall($attachment->{'download-url'}, false));

				$filesArray[] = $file['filename'];

				echo "Saving file " . $attachment->name . "...\n";
			}
		}

		$n += 100;

	} while(count($attachments->attachment) == 100);
}
?>

Run in from console with: php basecamp.php