How to get full imap response via php curl?

Question

PHP

Good day.
I'm trying to get the message data using the imap protocol with curl without marking it as read:

curl_setopt_array($this->conn, [
    CURLOPT_CUSTOMREQUEST => 'FETCH '.$uid.' BODY.PEEK[TEXT]',
]);
$ret = curl_exec($this->conn);
var_dump($ret);exit;

As a result I get:

string '* 381 FETCH (BODY[TEXT] {1311}
' (length=32)

And how to get the rest of the response lines?
Thanks in advance.
PS:

curl_setopt_array($this->conn, [
    CURLOPT_URL => $url.';UID='.$uid.'/',
]);

Thus, the answer is complete.