百分请教关于PHP文件下载的的文件大小限制,达人进 fread($file,300000000); 读取的长度试着调小一些. 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 set_time_limit(0);$file_name = "test.rmvb"; $nFileSize = filesize($file_name);Header("Content-type: application/octet-stream");Header("Content-Disposition: attachment; filename=\"$filename\"");Header("Content-Length: $nFileSize");Header('Accept-Ranges: bytes');Header("Cache-control: private");Header('Pragma: private');Header("Expires: 0");while (!feof($file)){ echo fread($file,50000);}fclose ($file);1G的都读取成功了,呵呵,你试试吧. 3楼,接分吧,谢谢大家,有没有人用discuz的啊?大家一起讨论讨论啊 readfile ar~~~~~~~~~~~~~~~~~~~~ $file_name = "abc.exe"; $file_dir = "/xxx/"; $path = $file_dir.$file_name; if (file_exists($path)) { //检查文件是否存在 header("Pragma: public"); header("Expires: 0"); header("Cache-Control: must-revalidate, post-check=0, pre-check=0"); header("Content-Type: application/force-download"); header("Content-Type: application/download"); header("Content-Disposition: attachment;filename=$filename "); header("Content-Transfer-Encoding: binary "); readfile($path); } else { die("文件找不到"); } 经过反复验证,最最保险的PHP下载代码类来了<?php function downFile($fileName, $fancyName = '', $forceDownload = true, $speedLimit = 0, $contentType = '') { if (!is_readable($fileName)) { header("HTTP/1.1 404 Not Found"); return false; } $fileStat = stat($fileName); $lastModified = $fileStat['mtime']; $md5 = md5($fileStat['mtime'] .'='. $fileStat['ino'] .'='. $fileStat['size']); $etag = '"' . $md5 . '-' . crc32($md5) . '"'; header('Last-Modified: ' . gmdate("D, d M Y H:i:s", $lastModified) . ' GMT'); header("ETag: $etag"); if (isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) && strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']) >= $lastModified) { header("HTTP/1.1 304 Not Modified"); return true; } if (isset($_SERVER['HTTP_IF_UNMODIFIED_SINCE']) && strtotime($_SERVER['HTTP_IF_UNMODIFIED_SINCE']) < $lastModified) { header("HTTP/1.1 304 Not Modified"); return true; } if (isset($_SERVER['HTTP_IF_NONE_MATCH']) && $_SERVER['HTTP_IF_NONE_MATCH'] == $etag) { header("HTTP/1.1 304 Not Modified"); return true; } if ($fancyName == '') { $fancyName = basename($fileName); } if ($contentType == '') { $contentType = 'application/octet-stream'; } $fileSize = $fileStat['size']; $contentLength = $fileSize; $isPartial = false; if (isset($_SERVER['HTTP_RANGE'])) { if (preg_match('/^bytes=(\d*)-(\d*)$/', $_SERVER['HTTP_RANGE'], $matches)) { $startPos = $matches[1]; $endPos = $matches[2]; if ($startPos == '' && $endPos == '') { return false; } if ($startPos == '') { $startPos = $fileSize - $endPos; $endPos = $fileSize - 1; } else if ($endPos == '') { $endPos = $fileSize - 1; } $startPos = $startPos < 0 ? 0 : $startPos; $endPos = $endPos > $fileSize - 1 ? $fileSize - 1 : $endPos; $length = $endPos - $startPos + 1; if ($length < 0) { return false; } $contentLength = $length; $isPartial = true; } } // send headers if ($isPartial) { header('HTTP/1.1 206 Partial Content'); header("Content-Range: bytes $startPos-$endPos/$fileSize"); } else { header("HTTP/1.1 200 OK"); $startPos = 0; $endPos = $contentLength - 1; } header('Pragma: cache'); header('Cache-Control: public, must-revalidate, max-age=0'); header('Accept-Ranges: bytes'); header('Content-type: ' . $contentType); header('Content-Length: ' . $contentLength); if ($forceDownload) { header('Content-Disposition: attachment; filename="' . rawurlencode($fancyName). '"'); } header("Content-Transfer-Encoding: binary"); $bufferSize = 2048; if ($speedLimit != 0) { $packetTime = floor($bufferSize * 1000000 / $speedLimit); } $bytesSent = 0; $fp = fopen($fileName, "rb"); fseek($fp, $startPos); while ($bytesSent < $contentLength && !feof($fp) && connection_status() == 0 ) { if ($speedLimit != 0) { list($usec, $sec) = explode(" ", microtime()); $outputTimeStart = ((float)$usec + (float)$sec); } $readBufferSize = $contentLength - $bytesSent < $bufferSize ? $contentLength - $bytesSent : $bufferSize; $buffer = fread($fp, $readBufferSize); echo $buffer; ob_flush(); flush(); $bytesSent += $readBufferSize; if ($speedLimit != 0) { list($usec, $sec) = explode(" ", microtime()); $outputTimeEnd = ((float)$usec + (float)$sec); $useTime = ((float) $outputTimeEnd - (float) $outputTimeStart) * 1000000; $sleepTime = round($packetTime - $useTime); if ($sleepTime > 0) { usleep($sleepTime); } } } return true; } ?> 经过反复验证,最最保险的PHP下载代码类来了<?php function downFile($fileName, $fancyName = '', $forceDownload = true, $speedLimit = 0, $contentType = '') { if (!is_readable($fileName)) { header("HTTP/1.1 404 Not Found"); return false; } $fileStat = stat($fileName); $lastModified = $fileStat['mtime']; $md5 = md5($fileStat['mtime'] .'='. $fileStat['ino'] .'='. $fileStat['size']); $etag = '"' . $md5 . '-' . crc32($md5) . '"'; header('Last-Modified: ' . gmdate("D, d M Y H:i:s", $lastModified) . ' GMT'); header("ETag: $etag"); if (isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) && strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']) >= $lastModified) { header("HTTP/1.1 304 Not Modified"); return true; } if (isset($_SERVER['HTTP_IF_UNMODIFIED_SINCE']) && strtotime($_SERVER['HTTP_IF_UNMODIFIED_SINCE']) < $lastModified) { header("HTTP/1.1 304 Not Modified"); return true; } if (isset($_SERVER['HTTP_IF_NONE_MATCH']) && $_SERVER['HTTP_IF_NONE_MATCH'] == $etag) { header("HTTP/1.1 304 Not Modified"); return true; } if ($fancyName == '') { $fancyName = basename($fileName); } if ($contentType == '') { $contentType = 'application/octet-stream'; } $fileSize = $fileStat['size']; $contentLength = $fileSize; $isPartial = false; if (isset($_SERVER['HTTP_RANGE'])) { if (preg_match('/^bytes=(\d*)-(\d*)$/', $_SERVER['HTTP_RANGE'], $matches)) { $startPos = $matches[1]; $endPos = $matches[2]; if ($startPos == '' && $endPos == '') { return false; } if ($startPos == '') { $startPos = $fileSize - $endPos; $endPos = $fileSize - 1; } else if ($endPos == '') { $endPos = $fileSize - 1; } $startPos = $startPos < 0 ? 0 : $startPos; $endPos = $endPos > $fileSize - 1 ? $fileSize - 1 : $endPos; $length = $endPos - $startPos + 1; if ($length < 0) { return false; } $contentLength = $length; $isPartial = true; } } // send headers if ($isPartial) { header('HTTP/1.1 206 Partial Content'); header("Content-Range: bytes $startPos-$endPos/$fileSize"); } else { header("HTTP/1.1 200 OK"); $startPos = 0; $endPos = $contentLength - 1; } header('Pragma: cache'); header('Cache-Control: public, must-revalidate, max-age=0'); header('Accept-Ranges: bytes'); header('Content-type: ' . $contentType); header('Content-Length: ' . $contentLength); if ($forceDownload) { header('Content-Disposition: attachment; filename="' . rawurlencode($fancyName). '"'); } header("Content-Transfer-Encoding: binary"); $bufferSize = 2048; if ($speedLimit != 0) { $packetTime = floor($bufferSize * 1000000 / $speedLimit); } $bytesSent = 0; $fp = fopen($fileName, "rb"); fseek($fp, $startPos); while ($bytesSent < $contentLength && !feof($fp) && connection_status() == 0 ) { if ($speedLimit != 0) { list($usec, $sec) = explode(" ", microtime()); $outputTimeStart = ((float)$usec + (float)$sec); } $readBufferSize = $contentLength - $bytesSent < $bufferSize ? $contentLength - $bytesSent : $bufferSize; $buffer = fread($fp, $readBufferSize); echo $buffer; ob_flush(); flush(); $bytesSent += $readBufferSize; if ($speedLimit != 0) { list($usec, $sec) = explode(" ", microtime()); $outputTimeEnd = ((float)$usec + (float)$sec); $useTime = ((float) $outputTimeEnd - (float) $outputTimeStart) * 1000000; $sleepTime = round($packetTime - $useTime); if ($sleepTime > 0) { usleep($sleepTime); } } } return true; } ?> 怎么实现从html理post到一php文件数据后在php文件中核查数据,如果数据有错在html里面弹出提示重新输入? 关于PHP中的分页啊... 大家帮我看看phpmyadmin的问题谢谢! 删除一文件中的内容,在线等 关于屏蔽用户恶意注册的问题! 一个下拉列表提交的问题 有人给过VBB的论坛吗?能指导一下吗? php中如何配置xml?? 求一正则 php 键值对数组存储问题 fckeditor 如何在firefox里运行? PHP创建表的问题
set_time_limit(0);
$file_name = "test.rmvb";
$nFileSize = filesize($file_name);
Header("Content-type: application/octet-stream");
Header("Content-Disposition: attachment; filename=\"$filename\"");
Header("Content-Length: $nFileSize");
Header('Accept-Ranges: bytes');
Header("Cache-control: private");
Header('Pragma: private');
Header("Expires: 0");while (!feof($file))
{
echo fread($file,50000);
}
fclose ($file);1G的都读取成功了,呵呵,你试试吧.
$file_dir = "/xxx/";
$path = $file_dir.$file_name;
if (file_exists($path)) { //检查文件是否存在
header("Pragma: public");
header("Expires: 0");
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header("Content-Type: application/force-download");
header("Content-Type: application/download");
header("Content-Disposition: attachment;filename=$filename ");
header("Content-Transfer-Encoding: binary ");
readfile($path);
} else {
die("文件找不到");
}
<?php
function downFile($fileName, $fancyName = '', $forceDownload = true, $speedLimit = 0, $contentType = '')
{
if (!is_readable($fileName))
{
header("HTTP/1.1 404 Not Found");
return false;
}
$fileStat = stat($fileName);
$lastModified = $fileStat['mtime'];
$md5 = md5($fileStat['mtime'] .'='. $fileStat['ino'] .'='. $fileStat['size']);
$etag = '"' . $md5 . '-' . crc32($md5) . '"';
header('Last-Modified: ' . gmdate("D, d M Y H:i:s", $lastModified) . ' GMT');
header("ETag: $etag");
if (isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) && strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']) >= $lastModified)
{
header("HTTP/1.1 304 Not Modified");
return true;
}
if (isset($_SERVER['HTTP_IF_UNMODIFIED_SINCE']) && strtotime($_SERVER['HTTP_IF_UNMODIFIED_SINCE']) < $lastModified)
{
header("HTTP/1.1 304 Not Modified");
return true;
}
if (isset($_SERVER['HTTP_IF_NONE_MATCH']) && $_SERVER['HTTP_IF_NONE_MATCH'] == $etag)
{
header("HTTP/1.1 304 Not Modified");
return true;
}
if ($fancyName == '')
{
$fancyName = basename($fileName);
}
if ($contentType == '')
{
$contentType = 'application/octet-stream';
}
$fileSize = $fileStat['size'];
$contentLength = $fileSize;
$isPartial = false;
if (isset($_SERVER['HTTP_RANGE']))
{
if (preg_match('/^bytes=(\d*)-(\d*)$/', $_SERVER['HTTP_RANGE'], $matches))
{
$startPos = $matches[1];
$endPos = $matches[2];
if ($startPos == '' && $endPos == '')
{
return false;
}
if ($startPos == '')
{
$startPos = $fileSize - $endPos;
$endPos = $fileSize - 1;
}
else if ($endPos == '')
{
$endPos = $fileSize - 1;
}
$startPos = $startPos < 0 ? 0 : $startPos;
$endPos = $endPos > $fileSize - 1 ? $fileSize - 1 : $endPos;
$length = $endPos - $startPos + 1;
if ($length < 0)
{
return false;
}
$contentLength = $length;
$isPartial = true;
}
}
// send headers
if ($isPartial)
{
header('HTTP/1.1 206 Partial Content');
header("Content-Range: bytes $startPos-$endPos/$fileSize");
}
else
{
header("HTTP/1.1 200 OK");
$startPos = 0;
$endPos = $contentLength - 1;
}
header('Pragma: cache');
header('Cache-Control: public, must-revalidate, max-age=0');
header('Accept-Ranges: bytes');
header('Content-type: ' . $contentType);
header('Content-Length: ' . $contentLength);
if ($forceDownload)
{
header('Content-Disposition: attachment; filename="' . rawurlencode($fancyName). '"');
}
header("Content-Transfer-Encoding: binary");
$bufferSize = 2048;
if ($speedLimit != 0)
{
$packetTime = floor($bufferSize * 1000000 / $speedLimit);
}
$bytesSent = 0;
$fp = fopen($fileName, "rb");
fseek($fp, $startPos);
while ($bytesSent < $contentLength && !feof($fp) && connection_status() == 0 )
{
if ($speedLimit != 0)
{
list($usec, $sec) = explode(" ", microtime());
$outputTimeStart = ((float)$usec + (float)$sec);
}
$readBufferSize = $contentLength - $bytesSent < $bufferSize ? $contentLength - $bytesSent : $bufferSize;
$buffer = fread($fp, $readBufferSize);
echo $buffer;
ob_flush();
flush();
$bytesSent += $readBufferSize;
if ($speedLimit != 0)
{
list($usec, $sec) = explode(" ", microtime());
$outputTimeEnd = ((float)$usec + (float)$sec);
$useTime = ((float) $outputTimeEnd - (float) $outputTimeStart) * 1000000;
$sleepTime = round($packetTime - $useTime);
if ($sleepTime > 0)
{
usleep($sleepTime);
}
}
}
return true;
}
?>
<?php
function downFile($fileName, $fancyName = '', $forceDownload = true, $speedLimit = 0, $contentType = '')
{
if (!is_readable($fileName))
{
header("HTTP/1.1 404 Not Found");
return false;
}
$fileStat = stat($fileName);
$lastModified = $fileStat['mtime'];
$md5 = md5($fileStat['mtime'] .'='. $fileStat['ino'] .'='. $fileStat['size']);
$etag = '"' . $md5 . '-' . crc32($md5) . '"';
header('Last-Modified: ' . gmdate("D, d M Y H:i:s", $lastModified) . ' GMT');
header("ETag: $etag");
if (isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) && strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']) >= $lastModified)
{
header("HTTP/1.1 304 Not Modified");
return true;
}
if (isset($_SERVER['HTTP_IF_UNMODIFIED_SINCE']) && strtotime($_SERVER['HTTP_IF_UNMODIFIED_SINCE']) < $lastModified)
{
header("HTTP/1.1 304 Not Modified");
return true;
}
if (isset($_SERVER['HTTP_IF_NONE_MATCH']) && $_SERVER['HTTP_IF_NONE_MATCH'] == $etag)
{
header("HTTP/1.1 304 Not Modified");
return true;
}
if ($fancyName == '')
{
$fancyName = basename($fileName);
}
if ($contentType == '')
{
$contentType = 'application/octet-stream';
}
$fileSize = $fileStat['size'];
$contentLength = $fileSize;
$isPartial = false;
if (isset($_SERVER['HTTP_RANGE']))
{
if (preg_match('/^bytes=(\d*)-(\d*)$/', $_SERVER['HTTP_RANGE'], $matches))
{
$startPos = $matches[1];
$endPos = $matches[2];
if ($startPos == '' && $endPos == '')
{
return false;
}
if ($startPos == '')
{
$startPos = $fileSize - $endPos;
$endPos = $fileSize - 1;
}
else if ($endPos == '')
{
$endPos = $fileSize - 1;
}
$startPos = $startPos < 0 ? 0 : $startPos;
$endPos = $endPos > $fileSize - 1 ? $fileSize - 1 : $endPos;
$length = $endPos - $startPos + 1;
if ($length < 0)
{
return false;
}
$contentLength = $length;
$isPartial = true;
}
}
// send headers
if ($isPartial)
{
header('HTTP/1.1 206 Partial Content');
header("Content-Range: bytes $startPos-$endPos/$fileSize");
}
else
{
header("HTTP/1.1 200 OK");
$startPos = 0;
$endPos = $contentLength - 1;
}
header('Pragma: cache');
header('Cache-Control: public, must-revalidate, max-age=0');
header('Accept-Ranges: bytes');
header('Content-type: ' . $contentType);
header('Content-Length: ' . $contentLength);
if ($forceDownload)
{
header('Content-Disposition: attachment; filename="' . rawurlencode($fancyName). '"');
}
header("Content-Transfer-Encoding: binary");
$bufferSize = 2048;
if ($speedLimit != 0)
{
$packetTime = floor($bufferSize * 1000000 / $speedLimit);
}
$bytesSent = 0;
$fp = fopen($fileName, "rb");
fseek($fp, $startPos);
while ($bytesSent < $contentLength && !feof($fp) && connection_status() == 0 )
{
if ($speedLimit != 0)
{
list($usec, $sec) = explode(" ", microtime());
$outputTimeStart = ((float)$usec + (float)$sec);
}
$readBufferSize = $contentLength - $bytesSent < $bufferSize ? $contentLength - $bytesSent : $bufferSize;
$buffer = fread($fp, $readBufferSize);
echo $buffer;
ob_flush();
flush();
$bytesSent += $readBufferSize;
if ($speedLimit != 0)
{
list($usec, $sec) = explode(" ", microtime());
$outputTimeEnd = ((float)$usec + (float)$sec);
$useTime = ((float) $outputTimeEnd - (float) $outputTimeStart) * 1000000;
$sleepTime = round($packetTime - $useTime);
if ($sleepTime > 0)
{
usleep($sleepTime);
}
}
}
return true;
}
?>