code for downloading file

[kalkelaxmi]

when button was clicked then save dialog box should open

code for downloading file in php

[Beverleyh]

I don't think you need any special code - just zip up the file and point the href of an anchor tag at it. Zip files should always prompt a download/save box.

[keyboard]

I don't undersand what you mean. Are you trying to find a script to download something in php? Also what type of file?

[Beverleyh]

Please clarify your exact requirements. I already answered your other post about this but now I'm thinking there may be more to it.

If browsers are behaving strangely maybe this is a header issue?

Maybe you are enquiring about a zip-and-download script/function? Try pclzip: http://www.phpconcept.net/pclzip/ and tutorial: http://www.techiepark.com/tutorials/...-for-download/

Or do you need something else?

[gurmeet]

<?php
 
// place this code inside a php file and call it f.e. "download.php"
$path = $_SERVER['DOCUMENT_ROOT']."/path2file/"; // change the path to fit your websites document structure
$fullPath = $path.$_GET['download_file'];
 
if ($fd = fopen ($fullPath, "r")) {
    $fsize = filesize($fullPath);
    $path_parts = pathinfo($fullPath);
    $ext = strtolower($path_parts["extension"]);
    switch ($ext) {
        case "pdf":
        header("Content-type: application/pdf"); // add here more headers for diff. extensions
        header("Content-Disposition: attachment; filename=\"".$path_parts["basename"]."\""); // use 'attachment' to force a download
        break;
        default;
        header("Content-type: application/octet-stream");
        header("Content-Disposition: filename=\"".$path_parts["basename"]."\"");
    }
    header("Content-length: $fsize");
    header("Cache-control: private"); //use this to open files directly
    while(!feof($fd)) {
        $buffer = fread($fd, 2048);
        echo $buffer;
    }
}
fclose ($fd);
exit;
// example: place this kind of link into the document where the file download is offered:
// <a href="download.php?download_file=some_file.pdf">Download here</a>
?>

[jscheuer1]

Code works well gurmeet. Thanks. I have some questions though:

• Can we redirect to another page and/or echo page content on completion?
  
  
• If not, can we do something concurrently to show the user something?
  
  
• Shouldn't fclose ($fd); be inside the conditional that opened the file and established the $fd handle?
  
  
• Is the buffering necessary? If so why?
  
  
• Similarly is the echoing of the buffer value really needed, and if so why?

[liamallan]

i created a downloads module for my jcow social network site which uses the following code:

 
$fileserver_path = 'your/downloads/folder/';    // change this to the directory your files reside
$req_file          = basename($_GET['file']);
$whoami             = basename(__FILE__);    // you are free to rename this file 

if (empty($req_file)) {
    print "Usage: $whoami?file=<file_to_download>";
    exit;
}

/* no web spamming */
if (!preg_match("/^[a-zA-Z0-9._-]+$/", $req_file, $matches)) {
    print "I can't do that. sorry.";
    exit;
}

/* download any file, but not this one */
if ($req_file == $whoami) {
    print "I can't do that. sorry.";
    exit;
}

/* check if file exists */
if (!file_exists("$fileserver_path/$req_file")) {
    print "File <strong>$req_file</strong> doesn't exist.";
    exit;
}

if (empty($_GET['send_file'])) {
    header("Refresh: 5; url=download.php?file=$req_file&send_file=yes");
}
else {
    header('Content-Description: File Transfer');
    header('Content-Type: application/force-download');
    header('Content-Length: ' . filesize("$fileserver_path/$req_file"));
    header('Content-Disposition: attachment; filename=' . $req_file);
    readfile("$fileserver_path/$req_file");
    exit;
}

mysql_query("UPDATE `your_downloads_tbl` SET `download_total` = download_total+1 WHERE `download_file` = '$req_file'");
echo '
<h3>Downloading '.$req_file.'...</h3>';
echo '
<p>Your download should begin shortly. If it doesn\'t start, 
   follow this <a href="'.$fileserver_path.''.$req_file.'">link</a>.</p>'; 

and here is an example link to the page to download, eg. say we wanna download the file 'forums.zip':

<a href="http://yourdomain.com/download.php?file=forums.zip">Download Forums</a>