php readfile() 和 fopen() 损坏/损坏下载

Question

Long time lurker 第一次海报，

我已经完成了这个问题，所以我想我会放下骄傲并问专家，我在这里阅读了超过 20 个类似的问题并尝试了所有修复解决方案，但我得到了相同的结果。

我使用 PHP 供用户下载项目，但是我已经尝试过 readfile 和 fopen 但每次下载都是损坏的，有时大小为 0 有时是正确的(ish)大小，但总是损坏或损坏

谁能看一眼这段代码并告诉我它有什么问题，我已经搜索了很多次，现在我可能只是遗漏了一些非常简单的东西，......像往常一样

如有任何帮助，我们将不胜感激。

(如果需要可以显示/loap.php 的内容)

编辑:已解决对于偶然发现这个问题的人来说只是一个快速更新，我设法让这个工作......我已经尝试了某些命令的许多不同变体，但似乎我错过了尝试使用“ob_clean()”和“ob_end_flush()”与 fopen()， .. 它成功了，正如我所料，这是一个简单的修复 感谢 Twisty 的帮助，你激发了我的灵感 ;)

<?php 
require_once('../secura/load.php');

function get_remote_file_size($url, $readable = true){
   $parsed = parse_url($url);
   $host = $parsed["host"];
   $fp = @fsockopen($host, 80, $errno, $errstr, 20);
   if(!$fp) return false;
   else {
       @fputs($fp, "HEAD $url HTTP/1.1\r\n");
       @fputs($fp, "HOST: $host\r\n");
       @fputs($fp, "Connection: close\r\n\r\n");
       $headers = "";
       while(!@feof($fp))$headers .= @fgets ($fp, 128);
   }
   @fclose ($fp);
   $return = false;
   $arr_headers = explode("\n", $headers);
   foreach($arr_headers as $header) {
			 $s = "Content-Length: ";
       if(substr(strtolower ($header), 0, strlen($s)) == strtolower($s)) {
           $return = trim(substr($header, strlen($s)));
           break;
       }
   }
   
   return $return;
}

function get_ext($name)

{

	$fn = get_basename($name);

	return (strpos($fn, '.') ? strtolower(substr(strrchr($fn, '.'), 1)) : '');

}
function get_basename($name)



{

	return basename(str_replace('\\', '/', $name));

}

function get_filesize_unit($size)



{

	$size = max(0, $size);

	static $u = array('&nbsp;B', 'KB', 'MB', 'GB');

	for ($i=0; $size >= 1024 && $i < 4; $i++)

	{

		$size /= 1024;

	}

	return number_format($size, 1).' '.$u[$i];

}



///////////////////////////////////////////////////////////////////////////////////////////////

function find_mime_type($ext)

{

	static $mime_types = array(

		'application/andrew-inset' => array('ez'),

		'application/mac-binhex40' => array('hqx'),

		'application/mac-compactpro' => array('cpt'),

		'application/mathml+xml' => array('mathml'),

		'application/msword' => array('doc'),

		'application/octet-stream' => array('bin', 'dms', 'lha',

			'lzh', 'exe', 'class', 'so', 'dll', 'dmg'),

		'application/oda' => array('oda'),

		'application/ogg' => array('ogg'),

		'application/pdf' => array('pdf'),

		'application/postscript' => array('ai', 'eps', 'ps'),

		'application/rdf+xml' => array('rdf'),

		'application/smil' => array('smi', 'smil'),

		'application/srgs' => array('gram'),

		'application/srgs+xml' => array('grxml'),

		'application/vnd.mif' => array('mif'),

		'application/vnd.mozilla.xul+xml' => array('xul'),

		'application/vnd.ms-excel' => array('xls'),

		'application/vnd.ms-powerpoint' => array('ppt'),

		'application/vnd.wap.wbxml' => array('wbxml'),

		'application/vnd.wap.wmlc' => array('wmlc'),

		'application/vnd.wap.wmlscriptc' => array('wmlsc'),

		'application/voicexml+xml' => array('vxml'),

		'application/x-bcpio' => array('bcpio'),

		'application/x-cdlink' => array('vcd'),

		'application/x-chess-pgn' => array('pgn'),

		'application/x-cpio' => array('cpio'),

		'application/x-csh' => array('csh'),

		'application/x-director' => array('dcr', 'dir', 'dxr'),

		'application/x-dvi' => array('dvi'),

		'application/x-futuresplash' => array('spl'),

		'application/x-gtar' => array('gtar'),

		'application/x-hdf' => array('hdf'),

		'application/x-javascript' => array('js'),

		'application/x-koan' => array('skp', 'skd', 'skt', 'skm'),

		'application/x-latex' => array('latex'),

		'application/x-netcdf' => array('nc', 'cdf'),

		'application/x-sh' => array('sh'),

		'application/x-shar' => array('shar'),

		'application/x-shockwave-flash' => array('swf'),

		'application/x-stuffit' => array('sit'),

		'application/x-sv4cpio' => array('sv4cpio'),

		'application/x-sv4crc' => array('sv4crc'),

		'application/x-tar' => array('tar'),

		'application/x-tcl' => array('tcl'),

		'application/x-tex' => array('tex'),

		'application/x-texinfo' => array('texinfo', 'texi'),

		'application/x-troff' => array('t', 'tr', 'roff'),

		'application/x-troff-man' => array('man'),

		'application/x-troff-me' => array('me'),

		'application/x-troff-ms' => array('ms'),

		'application/x-ustar' => array('ustar'),

		'application/x-wais-source' => array('src'),

		'application/xhtml+xml' => array('xhtml', 'xht'),

		'application/xslt+xml' => array('xslt'),

		'application/xml' => array('xml', 'xsl'),

		'application/xml-dtd' => array('dtd'),

		'application/zip' => array('zip'),

		'audio/basic' => array('au', 'snd'),

		'audio/midi' => array('mid', 'midi', 'kar'),

		'audio/mpeg' => array('mpga', 'mp2', 'mp3'),

		'audio/x-aiff' => array('aif', 'aiff', 'aifc'),

		'audio/x-mpegurl' => array('m3u'),

		'audio/x-pn-realaudio' => array('ram', 'ra'),

		'application/vnd.rn-realmedia' => array('rm'),

		'audio/x-wav' => array('wav'),

		'chemical/x-pdb' => array('pdb'),

		'chemical/x-xyz' => array('xyz'),

		'image/bmp' => array('bmp'),

		'image/cgm' => array('cgm'),

		'image/gif' => array('gif'),

		'image/ief' => array('ief'),

		'image/jpeg' => array('jpeg', 'jpg', 'jpe'),

		'image/png' => array('png'),

		'image/svg+xml' => array('svg'),

		'image/tiff' => array('tiff', 'tif'),

		'image/vnd.djvu' => array('djvu', 'djv'),

		'image/vnd.wap.wbmp' => array('wbmp'),

		'image/x-cmu-raster' => array('ras'),

		'image/x-icon' => array('ico'),

		'image/x-portable-anymap' => array('pnm'),

		'image/x-portable-bitmap' => array('pbm'),

		'image/x-portable-graymap' => array('pgm'),

		'image/x-portable-pixmap' => array('ppm'),

		'image/x-rgb' => array('rgb'),

		'image/x-xbitmap' => array('xbm'),

		'image/x-xpixmap' => array('xpm'),

		'image/x-xwindowdump' => array('xwd'),

		'model/iges' => array('igs', 'iges'),

		'model/mesh' => array('msh', 'mesh', 'silo'),

		'model/vrml' => array('wrl', 'vrml'),

		'text/calendar' => array('ics', 'ifb'),

		'text/css' => array('css'),

		'text/html' => array('html', 'htm'),

		'text/plain' => array('asc', 'txt'),

		'text/richtext' => array('rtx'),

		'text/rtf' => array('rtf'),

		'text/sgml' => array('sgml', 'sgm'),

		'text/tab-separated-values' => array('tsv'),

		'text/vnd.wap.wml' => array('wml'),

		'text/vnd.wap.wmlscript' => array('wmls'),

		'text/x-setext' => array('etx'),

		'video/mpeg' => array('mpeg','3gp','mp4', 'mpg', 'mpe'),

		'video/quicktime' => array('qt', 'mov'),

		'video/vnd.mpegurl' => array('mxu', 'm4u'),

		'video/x-msvideo' => array('avi'),

		'video/x-sgi-movie' => array('movie'),

		'x-conference/x-cooltalk' => array('ice')

	);
	foreach ($mime_types as $mime_type => $exts)
	{
		if (in_array($ext, $exts))
		{
			return $mime_type;
		}
	}
	return 'text/plain';
}
$id = $_GET['id'];
$error = false;
$error = (!$product->is_product($id)?$products->error:$error);
$error =(!$purchases->is_purchased($_SESSION['uid'],$id)?$purchases->error:$error);
if(!$error){
$file = $product->details($id);
$filepath = $file['file'];
$fname=get_basename($filepath);
if (fopen($filepath,r) || (file_exists($filepath)) ){
if (@filesize($filepath)){
$fsize =filesize($filepath);
}
else
{
$fsize =  get_remote_file_size($filepath); 
}
$ext= get_ext($fname);
$ctype= find_mime_type($ext);
header('Content-Type:'. $ctype );
header('Content-Length: ' . $fsize);
header('Content-Disposition: attachment; filename=' . $fname);
ob_clean();
$file = fopen($filepath,'r');
ob_end_flush();
fpassthru($file);
set_time_limit(0);
}else{
return  'File Doesn\'t Exist';  } // exist fxn....
}
echo $error;
?>

Answer 1

对于偶然发现这个问题的人来说，只是一个快速更新，我设法让这个工作......

我尝试了某些命令的许多不同变体，但似乎我错过了使用 ob_clean() 和 ob_end_flush() 与 fopen() 的尝试，..它成功了，正如我所料，这是一个简单的修复

感谢 Twisty 的帮助，你激发了我的灵感 ;)

已在 OP 中更新了更正后的工作代码