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PHP - Manual: ssh2_scp_recv

2024-11-13

ssh2_scp_recv

(PECL ssh2 >= 0.9.0)

ssh2_scp_recv — Request a file via SCP

说明

ssh2_scp_recv(resource $session, string $remote_file, string $local_file): bool

Copy a file from the remote server to the local filesystem using the SCP protocol.

参数

session

An SSH connection link identifier, obtained from a call to ssh2_connect().

remote_file

Path to the remote file.

local_file

Path to the local file.

返回值

成功时返回 true， 或者在失败时返回 false。

范例

示例 #1 Downloading a file via SCP

<?php
$connection = ssh2_connect('shell.example.com', 22);
ssh2_auth_password($connection, 'username', 'password');

ssh2_scp_recv($connection, '/remote/filename', '/local/filename');
?>

参见

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User Contributed Notes 10 notes

up
4
ojovirtual
11 years ago
Trying to get a remote file with spaces in its name?

Never forget to use quotes in the remote filename, but never in the local one.

Example:

<?php
$remote_file_name="my name with spaces.ext"

ssh2_scp_recv($cn,$remote_file_name,$local_path."/".$remote_file_name); // ERROR

ssh2_scp_recv($cn,"\"".$remote_file_name."\"",$local_path."/".$remote_file_name); //OK

ssh2_scp_recv($cn,"\"".$remote_file_name."\"","\"".$local_path."/".$remote_file_name."\""); //ERROR
?>

So, the quotes in the file name are needed only for remote, not for local.
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1
Anonymous
8 years ago
May fail when trying to get a remote file from the user's home directory when you try to use a path like '~/filename.txt' .  It appears to dislike tildes, so use the full file path.
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2
liubomyr dot pelo at gmail dot com
5 years ago
In case if you get:

Warning: ssh2_scp_recv(): Unable to receive remote file in /some-php-file.php on line 2

Use `stream_get_contents` function.

Example:
<?php
$stream = @fopen("ssh2.sftp://$sftp$remoteFile", 'r');
if (! $stream) {
        throw new \Exception("Could not open file: $remoteFile");
}

$contents = stream_get_contents($stream);
file_put_contents ($localFile, $contents);
@fclose($stream);
?>
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2
miller4980 at msn dot com
14 years ago
Problem:
  can't pass an array to sftp_scp_rec()
  also: for Windows: sftp was not happy when connecting to   a  Windows dir.
  eg: sftp_scp_rec($connection, "remote/directory","local/$directory[$i]");
Solution:
The array was placing whitespace on the end of the variable.
trim(" ","",$directory[$i]);

connecting to Windows dir:
sftp_scp_rec($connection, "linux/directory","\\windows\share[$i]");

This script backs up remote Linux directories to a local Windows directory based on modified dates of files.

The Idea is to get a complete back up of a directory via ftp client etc.
Then when the script runs it will back up newly modified files only.

<?php
//error_reporting(0);

$file        ='';
$arr2        ='';
$arr1        ='';
$ldir         = '';

$remotedirs[0]     = "Domain name or IP address/";
$remotedirs[1]     = "Domain name or IP address/";
$remotedirs[2]     = "Domain name or IP address/";
$remotedirs[3]     = "Domain name or IP address/";

    $fh = fopen("c:\dirlist.txt","w");
    fwrite($fh, " ");
    fclose($fh);
foreach ($remotedirs as $val){
echo $remotedir = "/data/www/$val/";
$localdir     = "\\\\192.168.0.234\\C$\\xampp\\htdocs\\$val\\";
backupwebsites($remotedir,$localdir);
}
function backupwebsites($remotedir,$localdir){
    $connection = ssh2_connect(Host IP or Domain, 22);
    $com ="ls -R -lt $remotedir";
    ssh2_auth_password($connection, 'user', 'password');
    $stream = ssh2_exec($connection, $com );
    stream_set_blocking($stream, true);
    $output = stream_get_contents($stream);

    $fh = fopen("c:\dirlist.txt","a+");
    fwrite($fh, $output);
    fclose($fh);
    $handle = @fopen('c:\dirlist.txt', "r");
if ($handle) {
   while (!feof($handle)) {
       $lines[] = fgets($handle, 4096);
   }
   fclose($handle);
}
    foreach ($lines as $val)
    {
        $yr = date('Y-m-d');
        $i++;
        $arr1=split("200",$val);
        $arr2=explode(" ",$arr1[1]);
        if("200".$arr2[0]==$yr)
        {
            //if("200".$arr2[0]=='2008-04-21'){    //for testing
            $remotedir = $remotedir.$arr2[2];
            $cpy=$arr2[2];
            $file = $localdir;
            glue($connection,$remotedir,$localdir,$cpy);
        }
    }
}   
//echo $i;
function glue($connection,$remotedir,$localdir,$cpy){
    $ldir[0] = "$localdir";
    $ldir[1]="$cpy";
    $file = $ldir[0].$ldir[1];
    $file = trim($file);
     $file;
gop($connection,$remotedir,$file);
}
function gop($connection,$remotedir,$file){
echo $file;

ssh2_scp_recv(
$connection,
$remotedir,
$file);
}

?>
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1
mark at mohc dot net
9 years ago
Transferred files can be truncated if you do not call ssh2_exec($connection,'exit').  ssh2_scp_send will return true even if the file did not completely transfer.

eg.

ssh2_scp_send($connection, $infile, $remotefile, 0644);
ssh2_exec($connection, 'exit'); // exit the ssh2 connection
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0
gordon_e_rouse at yahoo dot com dot au
14 years ago
Being still in Beta, I guess it will have it quirks. One I found was that if the remote filename has brackets in it, it just wont work.

I should file it as a bug report, but find the process all intimidating really - I am always just a stupid user who does not know what he is on about!

But anyway - the work around of renaming the file before downloading it works fine.

use:
$_new_path = str_replace("(", "", $_path );
$_new_path = str_replace(")", "", $_new_path );

ssh2_sftp_rename( $sftp,  $_path, $_new_path );

To tell you the truth I haven't determined if it is the open or close bracket, or both. Someone else can investigate that.

Meanwhile, it would be good to know all the bad filename characters which this function has problems with, no doubt there are more.
up
-1
Maddie
8 years ago
If you are getting the error - ssh2_scp_recv(): Unable to receive remote file

Try using file_get_contents("ssh2.sftp://$sftp$fileLocation") and file_put_contents() as a workaround-- this is after I tried all sorts of different remote file path formats to no avail.
up
-1
jcalcote at novell dot com
15 years ago
If you scan a remote directory for a list of files by using opendir and readdir on a path obtained from ssh2_sftp(), you'll end up with a list of full file paths containing the ssh2.sftp://$sftp prefix, where $sftp is the sftp resource string returned by ssh2_sftp.

If you later attempt to use ssh2_scp_recv() (even on the same connection!) to copy files locally from the remote path, the copy operation will fail because ssh2_scp_recv() doesn't like the wrapper path prefix. It expects remote file references to be rooted at the base of the remote file system (eg., '/').

Moral: ssh2_scp_recv() likes paths rooted at the file system root on the remote machine, not full network paths. This routine will fail with an obscure message about not being able to copy the files - yet when you go look it works fine. Worse, when you connect and copy them from an scp shell session, it also works fine.
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-1
luis dot sv at gmail dot com
12 years ago
This function can be used to copy all files into a directory on a remote server, using SSH and SCP.

<?php
$connection = ssh2_connect('host', 22);
ssh2_auth_password($connection, 'user', 'password');

$remote_dir="/remote_dir/";
$local_dir="/local_dir/";

$com ="ls $remote_dir";
$stream = ssh2_exec($connection, $com);
stream_set_blocking($stream,true);
$cmd=fread($stream,4096);

$arr=explode("\n",$cmd);

$total_files=sizeof($arr);

for($i=0;$i<$total_files;$i++){
    $file_name=trim($arr[$i]);
    if($file_name!=''){
        $remote_file=$remote_dir.$file_name;       
        $local_file=$local_dir.$file_name;
       
        if(ssh2_scp_recv($connection, $remote_file,$local_file)){
            echo "File ".$file_name." was copied to $local_dir<br />";
        }
    }
}

fclose($stream);
?>
up
-3
chad dot [the letter d] johnson AT gmail
14 years ago
If when trying to use this function you get "Warning: ssh2_scp_send(): Failure creating remote file," then try using

$data = file_get_contents("ssh2.sftp://$sftp/path/to/file");
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官方地址：https://www.php.net/manual/en/function.ssh2-scp-recv.php

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