download a file from ftp using curl and php

My guess is that your URL is pointing towards a directory, not a file. You would need to feed CURLOPT_URL the full URL to the file. Also if you want to download a file you might want to save it somewhere.

Working example:

$curl = curl_init();
$file = fopen("ls-lR.gz", 'w');
curl_setopt($curl, CURLOPT_URL, ""); #input
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($curl, CURLOPT_FILE, $file); #output
curl_setopt($curl, CURLOPT_USERPWD, "$_FTP[username]:$_FTP[password]");

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