gistfile1.aw

function getReportFolders($access_token) {
	$arrReturn = array();

	$query = "SELECT Id, DeveloperName FROM Folder WHERE Type='Report' AND DeveloperName != ''";
	$url = "https://ssl.salesforce.com/services/data/v20.0/query?q=" . urlencode($query);

	$curl = curl_init($url);
	curl_setopt($curl, CURLOPT_HEADER, false);
	curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
	curl_setopt($curl, CURLOPT_HTTPHEADER, array("Authorization: OAuth $access_token"));

	$json_response = curl_exec($curl);
	curl_close($curl);

	$response = json_decode($json_response, true);
		
	foreach ((array) $response['records'] as $record) {
		array_push($arrReturn, $record['DeveloperName']);      	   
	}
		
	return $arrReturn;

}