How to download a file from SFTP using PHP?
<?php
$strServer = "pass.com";
$strServerPort = "22";
$strServerUsername = "admin";
$strServerPassword = "password";
$resConnection = ssh2_connect($strServer, $strServerPort);
if(ssh2_auth_password($resConnection, $strServerUsername, $strServerPassword)) {
    $resSFTP = ssh2_sftp($resConnection);
    echo "success";
}
?>