how to open txt file from another server using php - php

Question

I want to open and write a txt file from another server, but I don't know how to do it? Can anyone help me?
<?PHP
$fname=$_POST["fname"];
$groupid=$_POST["groupid"];
$myfile = fopen("Ji.txt", "a+") or die("Unable to open file!");
fwrite($myfile, $fname."|".$groupid."\r\n");
fclose($myfile)
?>
I want to replace Ji.txt with http://xxx.xxx.xx.x/ddd.txt

Answer 1

You can read the files over HTTP by using fopen or cURL.
You can't write to files over HTTP unless the server you are writing to is set up to understand an appropriate request. You could configure it to support PUT requests (make sure you have some kind of authn/authz system in place!) and make one using cURL.
Alternatively, you could use some other protocol to make the file available between servers (such as NFS).

Answer 2

Alternatively you can do it with the FTP functions
<?php
// Connect to remote FTP server
$conn = ftp_connect("ftp.example.com")or die("Cant connect to ftp server");
$login = ftp_login($conn, "username", "password");
// Open local (temporary) file handle
$fh = fopen("Ji.txt", "a+");
// Get remote file and save it to the previous file handle
if(ftp_fget($conn, $fh, "Ji.txt", FTP_ASCII))
{
// Local file has now been updated with the content of the remote Ji.txt
$fname = $_POST['fname'];
$groupid = $_POST['groupid'];
fwrite($fh, $fname.'|'.$groupid.'\r\n');
if(ftp_fput($conn, "Ji.txt", $fh, FTP_ASCII))
echo 'File saved to remote server';
else
echo 'Error saving to remote server';
}
else
echo 'Error downloading remote file';
ftp_close($conn);
fclose($fh);
?>
Read more about ftp_fput etc here: http://php.net/manual/en/function.ftp-fput.php

Answer 3

As long as allow_url_fopen is set to True you can pass an URL to fopen() and read the data. Writing however, is impossible. However, you can write a wrapper around the file that accepts both GET & POSTS requests. A GET returns the contents of the file and a POST (or PUT) saves content to the files. The downside of this is that you must add security and it's a lot more complex to save the data.

Answer 4

Assuming you have access to the other server and the text file is available at a web address (ie you can see it in a browser) then you can use fopen to grab it, make your edits or whatever and then post back to a script that will handle the post data and save the file using curl. Example code below copied from this answer
$ch = curl_init();
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, array('file' => '#/path/to/file.txt'));
curl_setopt($ch, CURLOPT_URL, 'http://server2/upload.php');
curl_exec($ch);
curl_close($ch);

Answer 5

Posting server should be something like this
$ch = curl_init();
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, array('ourfilename' =>'yourpath/test.txt'));
curl_setopt($ch, CURLOPT_URL, 'http://urlreceivepost/getfile.php');
curl_exec($ch);
curl_close($ch);
Then getfile.php at your above url
if ($_POST) {
$file= $_POST['ourfilename'];
$data = file_get_contents($file);
$new = 'test.txt';
file_put_contents($new, $data);
var_dump($new);}