How to Download Large Files Through PHP Script

How to download large files through PHP script

If you use fopen and fread instead of readfile, that should solve your problem.

There's a solution in the PHP's readfile documentation showing how to use fread to do what you want.

using php to download files, not working on large files?

PHP has limits on how long a script can run, and how much memory it can use. It's possible that the script is timing out before it has completed, or is using up too much memory by reading in the large file.

Try tweaking the max_execution_time and memory_limit variables in php.ini. If you don't have access to php.ini, try the set_time_limit and/or ini_set functions.

How download big file using PHP (low memory usage)

Copy the file one small chunk at a time

/**
 * Copy remote file over HTTP one small chunk at a time.
 *
 * @param $infile The full URL to the remote file
 * @param $outfile The path where to save the file
 */
function copyfile_chunked($infile, $outfile) {
    $chunksize = 10 * (1024 * 1024); // 10 Megs

    /**
     * parse_url breaks a part a URL into it's parts, i.e. host, path,
     * query string, etc.
     */
    $parts = parse_url($infile);
    $i_handle = fsockopen($parts['host'], 80, $errstr, $errcode, 5);
    $o_handle = fopen($outfile, 'wb');

    if ($i_handle == false || $o_handle == false) {
        return false;
    }

    if (!empty($parts['query'])) {
        $parts['path'] .= '?' . $parts['query'];
    }

    /**
     * Send the request to the server for the file
     */
    $request = "GET {$parts['path']} HTTP/1.1\r\n";
    $request .= "Host: {$parts['host']}\r\n";
    $request .= "User-Agent: Mozilla/5.0\r\n";
    $request .= "Keep-Alive: 115\r\n";
    $request .= "Connection: keep-alive\r\n\r\n";
    fwrite($i_handle, $request);

    /**
     * Now read the headers from the remote server. We'll need
     * to get the content length.
     */
    $headers = array();
    while(!feof($i_handle)) {
        $line = fgets($i_handle);
        if ($line == "\r\n") break;
        $headers[] = $line;
    }

    /**
     * Look for the Content-Length header, and get the size
     * of the remote file.
     */
    $length = 0;
    foreach($headers as $header) {
        if (stripos($header, 'Content-Length:') === 0) {
            $length = (int)str_replace('Content-Length: ', '', $header);
            break;
        }
    }

    /**
     * Start reading in the remote file, and writing it to the
     * local file one chunk at a time.
     */
    $cnt = 0;
    while(!feof($i_handle)) {
        $buf = '';
        $buf = fread($i_handle, $chunksize);
        $bytes = fwrite($o_handle, $buf);
        if ($bytes == false) {
            return false;
        }
        $cnt += $bytes;

        /**
         * We're done reading when we've reached the conent length
         */
        if ($cnt >= $length) break;
    }

    fclose($i_handle);
    fclose($o_handle);
    return $cnt;
}

Adjust the $chunksize variable to your needs. This has only been mildly tested. It could easily break for a number of reasons.

Usage:

copyfile_chunked('http://somesite.com/somefile.jpg', '/local/path/somefile.jpg');

Trying to Download large file with php file

Just do this below the $path

$path = 'public/Uploads/Films/files/Crank2006.avi';
$filename = array_pop(explode('/',$path)); // Grabbing the filename ... it will be Crank2006.avi

and add the header with filename to your existing headers.

header("Content-disposition: filename=$filename");

EDIT:

Detecting MIME type...

$finfo = finfo_open(FILEINFO_MIME_TYPE);
echo finfo_file($finfo, $filename);

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