PHP - Export CSV to FTP rather than download in browser - php

Question

I have been trying for a few hours now to no avail. I have successfully output my CSV as a download in the browser using:
header("Content-type: application/csv");
header("Content-Disposition: attachment; filename=".$csv_filename."");
However I want that output to now go to an FTP server instead, I have got the connection and temp file part sorted but cannot seem to edit the file to output my results.
// create empty variable to be filled with export data
$csv_export = '';
for($i = 0; $i < $field; $i++) {
$csv_export.= mysql_field_name($query,$i).',';
}
// newline (seems to work both on Linux & Windows servers)
$csv_export.= '
';
// loop through database query and fill export variable
while($row = mysql_fetch_array($query)) {
// create line with field values
for($i = 0; $i < $field; $i++) {
$csv_export.= '"'.$row[mysql_field_name($query,$i)].'",';
}
$csv_export.= '
';
}
Above is the part that gets the query data and puts it into the CSV, I have tried incorporating both fputs and fputcsv in the loops to write the rows to the file.
//Upload the temporary file to server
ftp_fput($ftpstream, '/httpdocs/.../abandoned.csv', $temp, FTP_ASCII);
$fp = fopen('var/www/vhosts/.../abandoned.csv', 'w');
fputs($fp, '$csv_export');
fclose($fp);
echo($csv_export);
So, echoing the output works absolutely fine - all I want is that echo'd data written into a CSV file and uploaded to the FTP.
The error I've been given is:
Array ( [type] => 2 [message] => fclose() expects parameter 1 to be resource,
boolean given
So the fp is causing the problem... is it at the open stage or at the writing of csv_export?
Thanks in advance.

Answer 1

Try this
//Write the contents to the temp file
fputs($temp, $csv_export);
//upload the temp file
ftp_fput($ftpstream, '/httpdocs/.../abandoned.csv', $temp, FTP_ASCII);
//close the temp file
fclose($temp);
Your current code is creating an empty file, uploading it, and then creating a separate file. Even if you get it working on a local server, it is an unnecessary step.

Answer 2

Try this, not tested:
$filename = 'abandoned.csv';
$content = $csv_export;
$host = 'yourhost';
$user = 'youruser';
$password = 'yourpass';
//open connection to your ftp server
$stream = stream_context_create(array('ftp' => array('overwrite' => true)));
//authenticate to your ftp server, normal uri syntax
$uri = sprintf('ftp://%s:%s#%s/%s', $user, $password, $host, $filename);
file_put_contents($uri, $content, 0, $stream);

Answer 3

In phpinfo(); you can look for Registered PHP Streams and just use this in most of any cases:
file_put_contents('ftp://user:password#server/your/directory/file.csv', $csvData);

Answer 4

ftp_fput is a right way here.
But you have to prepare FTP connection and authenticate first. Assuming you have $csv_export string in memory:
// connect
$ftp_conn = ftp_connect('ftp.yourserver.net');
// authenticate
$login_result = ftp_login($conn_id, 'ftp_username', 'password');
// prepare output stream
$stream = fopen('data://text/plain,' . $csv_export, 'r');
// try to upload
if (ftp_fput($ftp_conn, '/httpdocs/.../abandoned.csv', $stream, FTP_ASCII)) {
echo "Successfully uploaded\n";
} else {
echo "There was a problem while uploading\n";
}
// close the connection and the file handler
ftp_close($ftp_conn);
fclose($stream);

Answer 5

You're receiving that error because fopen is returning false, which indicates that it was unable to open the file.
If I'm understanding your code, you're uploading abandoned.csv (which presumably exists) to the ftp after opening it in $temp. Is $temp pointing at your local copy of abandon.csv? Because if so, you should close the file stream pointing to it before opening a second one with fopen.
If that's not the issue, then abandoned.csv may not actually exist, in which case you may just be trying to fopen a missing file.