<?php

/* the host name or ip to download from */
$host = '192.168.1.2';
/* the absolute path on the host name */
$abspath = '/full/path/to/download';
/* username for host */
$user = 'cosmo';
/* password for user on host */
$pass = 'cosmo';
/* trg file*/
$trg = 'test.dat';

/* get curl instance */
$curl = curl_init();
/* set url of file to download */
$url = 'scp://' . $host . ':' . $abspath;
curl_setopt($curl, CURLOPT_URL, $url);
/* set credentials */
curl_setopt($curl, CURLOPT_USERPWD, $user . ':' . $pass);
/* set target file */
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
$fh = fopen($trg, 'w') or die('failed to open ' . $trg . ' for writing!');
curl_setopt($curl, CURLOPT_FILE, $fh);
/* start */
echo "<p>Output of curl_exec</p><pre>";
curl_exec($curl) or die(curl_error($curl));
/* close the curl instance */
echo "</pre>";
curl_close($curl);
fclose($fh);

echo "<p>File should now be successfully downloaded from $url to $trg:</p>";
echo '<pre>' . file_get_contents($trg) . '</pre>';

?>