[SOLVED] Upload from a Link?

[Warptweet]

I've been searching for a tutorial that shows me how to upload a file from a link instead of from your computer. Does anyone know a tutorial that tells me how to do this?

 

Any help is appreciated.

Thanks,

-Warptweet

[corbin]

I don't know of a tutorial, but I can tell you some functions to look into to do it...

 

You could use either fsockopen and send headers or you could try file_get_contents to grab the contents of the url entered in a $_POST or $_GET key (from a form, of course).

[Cagecrawler]

You don't, at least not in the normal way.  Use fopen to turn the url into a stream, then read it's contents and write those into a file on your server.

[Warptweet]

Wouldn't that return an access denied or forbidden error for trying to open a file not on my webserver?

 

What if it's something like a .swf flash file, not something with text inside?

[Cagecrawler]

You need to have allow_url_fopen set to true in your config. fopen and fread work with binary as well as text data, so the filetype doesn't matter.

[corbin]

Yeah, like cagecrawler said, you technically aren't uploading a file from the url, you're telling the server the url for it to download.

 

I forgot about fopen....  That would be much faster than fsock open ;p (and you wouldn't have to parse the url down to its host name).

 

I would use file_get_contents if I was going to use fopen though.

[Warptweet]

www.warptweet.com/url.php

 

I tries using file_get_contents to get a .swf file (a flash game file) from a gaming website to test it on. As you can see, it says "File is not writable". Here is my code.

 

$filename = 'test.txt';
$somecontent = "Add this to the file\n";

// Let's make sure the file exists and is writable first.
if (is_writable($filename)) {

    // In our example we're opening $filename in append mode.
    // The file pointer is at the bottom of the file hence
    // that's where $somecontent will go when we fwrite() it.
    if (!$handle = fopen($filename, 'a')) {
         echo "Cannot open file ($filename)";
         exit;
    }

    // Write $somecontent to our opened file.
    if (fwrite($handle, $somecontent) === FALSE) {
        echo "Cannot write to file ($filename)";
        exit;
    }

    echo "Success, wrote ($somecontent) to file ($filename)";

    fclose($handle);

} else {
    echo "The file $filename is not writable";
}

 

Anyone have a way around this?

I figured that I could copy the binary/text information taken from file_get_contents from a .swf file, put it on the file, and save it as .swf. This apparently does not work.

[corbin]

Return Values

Returns TRUE if the filename exists and is writable.

 

Unless the file exists (this is going on what I understand from what I just read in the php manual.  I might have misread it.), that function will always return false.

[Warptweet]

Thanks, it worked.

=)