Due to https://bugs.php.net/bug.php?id=73561
$stream = fopen("ssh2.sftp://intval($sftp)/path/to/file", 'r');
(PECL ssh2 >= 0.9.0)
ssh2_sftp — Initialize SFTP subsystem
$session
)Request the SFTP subsystem from an already connected SSH2 server.
This method returns an SSH2 SFTP resource for use with all other ssh2_sftp_*() methods and the ssh2.sftp:// fopen wrapper.
Example #1 Opening a file via SFTP
<?php
$connection = ssh2_connect('shell.example.com', 22);
ssh2_auth_password($connection, 'username', 'password');
$sftp = ssh2_sftp($connection);
$stream = fopen("ssh2.sftp://$sftp/path/to/file", 'r');
?>
Due to https://bugs.php.net/bug.php?id=73561
$stream = fopen("ssh2.sftp://intval($sftp)/path/to/file", 'r');
David's code works wonderfully except for one thing, it wouldn't upload a file until I placed a forward slash after '$sftp'
public function uploadFile($local_file, $remote_file)
{
$sftp = $this->sftp;
// Original
// "ssh2.sftp://$sftp$remote_file"
$stream = @fopen("ssh2.sftp://$sftp/$remote_file", 'w');
if (! $stream)
throw new Exception("Could not open file: $remote_file");
$data_to_send = @file_get_contents($local_file);
if ($data_to_send === false)
throw new Exception("Could not open local file: $local_file.");
if (@fwrite($stream, $data_to_send) === false)
throw new Exception("Could not send data from file: $local_file.");
@fclose($stream);
}
Here is a modified SFTPConnection class previously posted that returns a recursive directory scanFilesystem method.
<?php
class SFTPConnection
{
private $connection;
private $sftp;
public function __construct($host, $port=22)
{
$this->connection = @ssh2_connect($host, $port);
if (! $this->connection)
throw new Exception("Could not connect to $host on port $port.");
}
public function login($username, $password)
{
if (! @ssh2_auth_password($this->connection, $username, $password))
throw new Exception("Could not authenticate with username $username " . "and password $password.");
$this->sftp = @ssh2_sftp($this->connection);
if (! $this->sftp)
throw new Exception("Could not initialize SFTP subsystem.");
}
public function uploadFile($local_file, $remote_file)
{
$sftp = $this->sftp;
$stream = @fopen("ssh2.sftp://$sftp$remote_file", 'w');
if (! $stream)
throw new Exception("Could not open file: $remote_file");
$data_to_send = @file_get_contents($local_file);
if ($data_to_send === false)
throw new Exception("Could not open local file: $local_file.");
if (@fwrite($stream, $data_to_send) === false)
throw new Exception("Could not send data from file: $local_file.");
@fclose($stream);
}
function scanFilesystem($remote_file) {
$sftp = $this->sftp;
$dir = "ssh2.sftp://$sftp$remote_file";
$tempArray = array();
if (is_dir($dir)) {
if ($dh = opendir($dir)) {
while (($file = readdir($dh)) !== false) {
$filetype = filetype($dir . $file);
if($filetype == "dir") {
$tmp = $this->scanFilesystem($remote_file . $file . "/");
foreach($tmp as $t) {
$tempArray[] = $file . "/" . $t;
}
} else {
$tempArray[] = $file;
}
}
closedir($dh);
}
}
return $tempArray;
}
public function receiveFile($remote_file, $local_file)
{
$sftp = $this->sftp;
$stream = @fopen("ssh2.sftp://$sftp$remote_file", 'r');
if (! $stream)
throw new Exception("Could not open file: $remote_file");
$contents = fread($stream, filesize("ssh2.sftp://$sftp$remote_file"));
file_put_contents ($local_file, $contents);
@fclose($stream);
}
public function deleteFile($remote_file){
$sftp = $this->sftp;
unlink("ssh2.sftp://$sftp$remote_file");
}
}
?>
If you wish to store once the protocol + ressource used ("ssh2.sftp://$sftp";)
There's a little trick to know...
This won't work :
<?php
function connect(){
$connection = ssh2_connect('shell.example.com', 22);
ssh2_auth_password($connection, 'username', 'password');
$sftp = ssh2_sftp($connection);
return "ssh2.sftp://$sftp";
}
$remote = connect();
is_file( $remote."/path/to/file");
// Warning
// Message: is_file(): ## is not a valid SSH2 SFTP resource
?>
You need to have $sftp still avaible at moment the function (is_file, filesize, fopen, ...) uses it
Otherwise, I guess the GC cleans it up and closes the ssh2_stfp connection
That's why this work :
<?php
function connect(){
//...
global $sftp;
$sftp = ssh2_sftp($connection);
return "ssh2.sftp://$sftp";
}
$remote = connect();
is_file( $remote."/path/to/file");
// Or way better :
class myClass {
public function connect(){
//...
$this->sftp = ssh2_sftp($connection);
$this->remote = "ssh2.sftp://".$this->sftp;
}
public function test(){
is_file( $this->remote."/path/to/file");
}
}
$obj = new myClass();
$obj->connect();
$obj->test();
?>
Note that you must enter the full wrapper URI order for functions that accept those parameters to work properly. For example, this (which is referenced more than once in other comments) does not work:
while (false !== ($file = readdir($handle))) if (is_dir($file)) { /* ... */ }
This does work:
$sc = ssh2_sftp(...);
while (false !== ($file = readdir($handle))) if (is_dir("ssh2.sftp://$sc/$file")) { /* ... */ }
You need to pass the "path" into these functions as an fopen() wrapper URI.
When uploading (writing) a file you must use an absolute path, not a relative one.
If, like me, you want to use a relative path, you can use the following code:
$fh=fopen("ssh2.sftp://$sftp".ssh2_sftp_realpath($sftp,".")."/fileinmyhomedir.txt");
In
$stream = fopen("ssh2.sftp://$sftp/path/to/file", 'r');
please make sure that you are specifying the "absolute" path to a file.
If not, you'll get errors like
"Unable to open file ..."
The reasoning is simple ... ssh2.sftp://$sftp points to the "root" directory on the remote server, where, most likely, one does not have access.
It is necessary to point it to your "home" directory. For example, "ssh2.sftp://$sftp/home/username/filename" ... where "/home/username" is where your home directory is.
I changed the read function to:
public function receiveFile($remote_file, $local_file)
{
$sftp = $this->sftp;
$stream = @fopen("ssh2.sftp://$sftp$remote_file", 'r');
if (! $stream)
throw new Exception("Could not open file: $remote_file");
$size = $this->getFileSize($remote_file);
$contents = '';
$read = 0;
$len = $size;
while ($read < $len && ($buf = fread($stream, $len - $read))) {
$read += strlen($buf);
$contents .= $buf;
}
file_put_contents ($local_file, $contents);
@fclose($stream);
}
public function getFileSize($file){
$sftp = $this->sftp;
return filesize("ssh2.sftp://$sftp$file");
}
Not sure if this is a bug of some kind of security feature.
When reading files using ssh2.sftp anything inside php tags is inexplicably stripped.
foo.php
one
<?
echo 'two';
?>
echo 'three';
$stream = fopen("ssh2.sftp://$sftp$file", 'r');
echo filesize("ssh2.sftp://$sftp$file"); //CORRECT
echo fread($stream, filesize("ssh2.sftp://$sftp$file")); //prints "onethree"
Not sure why this happens and haven't found a workaround.
I added some functionality for scanning the filesystem and receiving and deleting files.
class SFTPConnection
{
private $connection;
private $sftp;
public function __construct($host, $port=22)
{
$this->connection = @ssh2_connect($host, $port);
if (! $this->connection)
throw new Exception("Could not connect to $host on port $port.");
}
public function login($username, $password)
{
if (! @ssh2_auth_password($this->connection, $username, $password))
throw new Exception("Could not authenticate with username $username " . "and password $password.");
$this->sftp = @ssh2_sftp($this->connection);
if (! $this->sftp)
throw new Exception("Could not initialize SFTP subsystem.");
}
public function uploadFile($local_file, $remote_file)
{
$sftp = $this->sftp;
$stream = @fopen("ssh2.sftp://$sftp$remote_file", 'w');
if (! $stream)
throw new Exception("Could not open file: $remote_file");
$data_to_send = @file_get_contents($local_file);
if ($data_to_send === false)
throw new Exception("Could not open local file: $local_file.");
if (@fwrite($stream, $data_to_send) === false)
throw new Exception("Could not send data from file: $local_file.");
@fclose($stream);
}
function scanFilesystem($remote_file) {
$sftp = $this->sftp;
$dir = "ssh2.sftp://$sftp$remote_file";
$tempArray = array();
$handle = opendir($dir);
// List all the files
while (false !== ($file = readdir($handle))) {
if (substr("$file", 0, 1) != "."){
if(is_dir($file)){
// $tempArray[$file] = $this->scanFilesystem("$dir/$file");
} else {
$tempArray[]=$file;
}
}
}
closedir($handle);
return $tempArray;
}
public function receiveFile($remote_file, $local_file)
{
$sftp = $this->sftp;
$stream = @fopen("ssh2.sftp://$sftp$remote_file", 'r');
if (! $stream)
throw new Exception("Could not open file: $remote_file");
$contents = fread($stream, filesize("ssh2.sftp://$sftp$remote_file"));
file_put_contents ($local_file, $contents);
@fclose($stream);
}
public function deleteFile($remote_file){
$sftp = $this->sftp;
unlink("ssh2.sftp://$sftp$remote_file");
}
}
if anyone is interested on how to get a directory listing:
$SSH_CONNECTION= ssh2_connect('shell.example.com', 22);
ssh2_auth_password($SSH_CONNECTION, 'username', 'password');
//-------------------------------------------------------------------
//this function finds all files within given directory and returns them
function scanFilesystem($dir) {
$tempArray = array();
$handle = opendir($dir);
// List all the files
while (false !== ($file = readdir($handle))) {
if (substr("$file", 0, 1) != "."){
if(is_dir($file)){
$tempArray[$file]=scanFilesystem("$dir/$file");
} else {
$tempArray[]=$file;
}
}
}
closedir($handle);
return $tempArray;
}
//-------------------------------------------------------------------
$sftp = ssh2_sftp($SSH_CONNECTION);
//code to get listing of all OUTGOING files
$dir = "ssh2.sftp://$sftp/outgoing";
$outgoing = scanFilesystem($dir);
sort($outgoing);
print_r($outgoing);
The sftp class provided by David Barnes works great. However, if you get errors about fopen and it failing to open a stream, try the fully qualified path on the remote server.
For example, if you are uploading a file to /Users/username/Sites/file.txt this may not work:
<?php
try {
$sftp = new SFTPConnection("localhost", 22);
$sftp->login("username", "password");
$sftp->uploadFile("/tmp/to_be_sent", "Sites/file.txt");
}
catch (Exception $e) {
echo $e->getMessage() . "\n";
}
?>
but this will:
<?php
try {
$sftp = new SFTPConnection("localhost", 22);
$sftp->login("username", "password");
$sftp->uploadFile("/tmp/to_be_sent", "/Users/username/Sites/file.txt");
}
catch (Exception $e) {
echo $e->getMessage() . "\n";
}
?>
Don't assume that since you are connecting as that user that you are starting in its home space.
Another possible option is that you need to use http://us.php.net/manual/en/function.ssh2-sftp-mkdir.php first to make the directory if it does not exist already, and then upload the file into it.
Here is an example of how to send a file with SFTP:
<?php
class SFTPConnection
{
private $connection;
private $sftp;
public function __construct($host, $port=22)
{
$this->connection = @ssh2_connect($host, $port);
if (! $this->connection)
throw new Exception("Could not connect to $host on port $port.");
}
public function login($username, $password)
{
if (! @ssh2_auth_password($this->connection, $username, $password))
throw new Exception("Could not authenticate with username $username " .
"and password $password.");
$this->sftp = @ssh2_sftp($this->connection);
if (! $this->sftp)
throw new Exception("Could not initialize SFTP subsystem.");
}
public function uploadFile($local_file, $remote_file)
{
$sftp = $this->sftp;
$stream = @fopen("ssh2.sftp://$sftp$remote_file", 'w');
if (! $stream)
throw new Exception("Could not open file: $remote_file");
$data_to_send = @file_get_contents($local_file);
if ($data_to_send === false)
throw new Exception("Could not open local file: $local_file.");
if (@fwrite($stream, $data_to_send) === false)
throw new Exception("Could not send data from file: $local_file.");
@fclose($stream);
}
}
try
{
$sftp = new SFTPConnection("localhost", 22);
$sftp->login("username", "password");
$sftp->uploadFile("/tmp/to_be_sent", "/tmp/to_be_received");
}
catch (Exception $e)
{
echo $e->getMessage() . "\n";
}
?>