I am trying to stream/pipe a file to the user's browser through HTTP from FTP. That is, I am trying to print the contents of a file on an FTP server.
This is what I have so far:
public function echo_contents() {
$file = fopen('php://output', 'w+');
if(!$file) {
throw new Exception('Unable to open output');
}
try {
$this->ftp->get($this->path, $file);
} catch(Exception $e) {
fclose($file); // wtb finally
throw $e;
}
fclose($file);
}
$this->ftp->get
looks like this:
public function get($path, $stream) {
ftp_fget($this->ftp, $stream, $path, FTP_BINARY); // Line 200
}
With this approach, I am only able to send small files to the user's browser. For larger files, nothing gets printed and I get a fatal error (readable from Apache logs):
PHP Fatal error: Allowed memory size of 16777216 bytes exhausted (tried to allocate 15994881 bytes) in /xxx/ftpconnection.php on line 200
I tried replacing php://output
with php://stdout
without success (nothing seems to be sent to the browser).
How can I efficiently download from FTP while sending that data to the browser at the same time?
Note: I would not like to use file_get_contents('ftp://user:pass@host:port/path/to/file');
or similar.