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AjmalPraveeN/mod_xsendfile_example.php

Forked from chrisbloom7/mod_xsendfile_example.php
Created December 21, 2021 20:34
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Revisions

  1. @chrisbloom7 chrisbloom7 revised this gist Sep 21, 2011. 1 changed file with 17 additions and 0 deletions.
    17 changes: 17 additions & 0 deletions return_bytes.php
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    Original file line number Diff line number Diff line change
    @@ -0,0 +1,17 @@
    <?php
    function return_bytes($val)
    {
    $val = trim($val);
    $last = strtolower($val[strlen($val) - 1]);
    switch ($last) {
    // The 'G' modifier is available since PHP 5.1.0
    case 'g':
    $val*= 1024;
    case 'm':
    $val*= 1024;
    case 'k':
    $val*= 1024;
    }
    return $val;
    }
    ?>
  2. @chrisbloom7 chrisbloom7 revised this gist Mar 4, 2011. 1 changed file with 29 additions and 0 deletions.
    29 changes: 29 additions & 0 deletions mod_xsendfile_example.php
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    Original file line number Diff line number Diff line change
    @@ -1,4 +1,18 @@
    <?php
    /**
    * In your Apache conf file, set the following to enable XSendfile:
    *
    <Directory "/">
    # This should be handled by the XSendFile module, but a bug in 0.11.1 prevented it from being set properly.
    EnableSendfile on
    XSendFile on
    # Absolute path to where your download files are stored. No trailing slash!
    XSendFilePath "C:\inetpub\apacheroot\mysite\download_files"
    </Directory>
    */

    function join_paths($paths)
    {
    if (!is_array($paths)) $paths = func_get_args();
    @@ -68,4 +82,19 @@ function send_download_package_file($base_path, $file_path)
    }
    return false;
    }

    // Absolute path, same as what you set for the XSendFilePath directive
    define('DOWNLOAD_PACKAGE_BASE_ROOT', 'C:\inetpub\apacheroot\mysite\download_files');

    // Any intermediate path between XSendFilePath and your file. It should have neither a leading nor trailing slash
    define('DOWNLOAD_PACKAGE_DIR', 'pdfs');

    if (send_download_package_file(DOWNLOAD_PACKAGE_DIR, 'some_big_file.pdf')) {
    // Exit successfully. We could just let the script exit
    // normally at the bottom of the page, but then blank lines
    // after the close of the script code would potentially cause
    // problems after the file download.
    exit;
    }
    // else, raise error...
    ?>
  3. @chrisbloom7 chrisbloom7 created this gist Mar 4, 2011.
    71 changes: 71 additions & 0 deletions mod_xsendfile_example.php
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    Original file line number Diff line number Diff line change
    @@ -0,0 +1,71 @@
    <?php
    function join_paths($paths)
    {
    if (!is_array($paths)) $paths = func_get_args();
    foreach ($paths as $i => $part) {
    $part = trim(preg_replace('|[\\\\/]+|', DIRECTORY_SEPARATOR, trim($part)) , DIRECTORY_SEPARATOR);
    if (!strlen($part)) unset($paths[$i]);
    else $paths[$i] = $part;
    }
    return join(DIRECTORY_SEPARATOR, $paths);
    }
    function can_haz_xsendfile()
    {
    // This will return false if PHP is not loaded as a module (i.e. uses cgi)
    return in_array('mod_xsendfile', apache_get_modules());
    }
    function send_download_package_file($base_path, $file_path)
    {
    $realpath = join_paths(DOWNLOAD_PACKAGE_BASE_ROOT, $base_path, $file_path);
    if (file_exists($realpath)) {
    // Fetching File
    $mtime = ($mtime = filemtime($realpath)) ? $mtime : gmtime();
    $size = intval(sprintf("%u", filesize($realpath)));
    header("Content-type: application/force-download");
    header('Content-Type: application/octet-stream');
    if (strstr($_SERVER["HTTP_USER_AGENT"], "MSIE") != false) {
    header("Content-Disposition: attachment; filename=" . urlencode(basename($file_path)) . '; modification-date="' . date('r', $mtime) . '";');
    } else {
    header("Content-Disposition: attachment; filename=\"" . basename($file_path) . '"; modification-date="' . date('r', $mtime) . '";');
    }
    if (can_haz_xsendfile()) {
    // Sending file via mod_xsendfile
    header("X-Sendfile: " . join_paths($base_path, $file_path));
    } else {
    // Sending file directly via script
    if (intval($size + 1) > return_bytes(ini_get('memory_limit')) && intval($size * 1.5) <= 1073741824) { //Not higher than 1GB
    // Setting memory limit
    ini_set('memory_limit', intval($size * 1.5));
    }
    @apache_setenv('no-gzip', 1);
    @ini_set('zlib.output_compression', 0);
    header("Content-Length: " . $size);
    // Set the time limit based on an average D/L speed of 50kb/sec
    set_time_limit(min(7200, // No more than 120 minutes (this is really bad, but...)
    ($size > 0) ? intval($size / 51200) + 60 // 1 minute more than what it should take to D/L at 50kb/sec
    : 1 // Minimum of 1 second in case size is found to be 0
    ));
    $chunksize = 1 * (1024 * 1024); // how many megabytes to read at a time
    if ($size > $chunksize) {
    // Chunking file for download
    $handle = fopen($realpath, 'rb');
    $buffer = '';
    while (!feof($handle)) {
    $buffer = fread($handle, $chunksize);
    echo $buffer;
    ob_flush();
    flush();
    }
    fclose($handle);
    } else {
    // Streaming whole file for download
    readfile($realpath);
    }
    }
    return true;
    } else {
    // File not found! Throw error here...
    }
    return false;
    }
    ?>