Moving a file on an ftp site using php cURL - php

Question

I have a need to rename a file after download using php cURL.
Here's what I have:
$localFile = fopen($fileName, 'w');
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($curl, CURLOPT_FILE, $localFile);
curl_setopt($curl, CURLOPT_USERPWD, "$ftpUsername:$ftpPassword");
curl_setopt($curl, CURLOPT_POSTQUOTE, array("RNFR $remoteFile", "RNTO $remoteFile.downloaded"));
curl_exec($curl) === false) {
throw new Exception(curl_error($curl));
}
If I remove the CURLOPT_POSTQUOTE part, the file downloads fine. I've also tried a couple different combinations of the postquote array:
curl_setopt($curl, CURLOPT_POSTQUOTE, array("RNFR $remoteFile RNTO $remoteFile.downloaded"));
curl_setopt($curl, CURLOPT_POSTQUOTE, array("-RNFR $remoteFile", "-RNTO $remoteFile.downloaded"));
curl_setopt($curl, CURLOPT_POSTQUOTE, array("-RNFR $remoteFile -RNTO $remoteFile.downloaded"));
curl_setopt($curl, CURLOPT_POSTQUOTE, array("rename $remoteFile $remoteFile.downloaded"));
The error I've been getting look like:
ERROR : QUOT string not accepted: -RNFR $remoteFile -RNTO $remoteFile.downloaded

Answer 1

In case anybody finds themselves here in the future.
My issue was that $remoteFile resolved to something like /remote_folder/remote_file.txt, but since my ftp connection already included the folder, something like ftp://www.example.com/remote_folder/remote_file.txt, I wasn't supposed to specify the folder in RNFR and RNTO.