我使用此功能制作下载链接:
<?php
function downloadFile($fileLocation,$fileName,$maxSpeed = 13,$doStream =
false){
if (connection_status()!=0) return(false);
$extension = strtolower(end(explode('.',$fileName)));
/* List of File Types */
$fileTypes['swf'] = 'application/x-shockwave-flash';
$fileTypes['pdf'] = 'application/pdf';
$fileTypes['exe'] = 'application/octet-stream';
$fileTypes['zip'] = 'application/zip';
$fileTypes['doc'] = 'application/msword';
$fileTypes['xls'] = 'application/vnd.ms-excel';
$fileTypes['ppt'] = 'application/vnd.ms-powerpoint';
$fileTypes['gif'] = 'image/gif';
$fileTypes['png'] = 'image/png';
$fileTypes['jpeg'] = 'image/jpg';
$fileTypes['jpg'] = 'image/jpg';
$fileTypes['rar'] = 'application/rar';
$fileTypes['ra'] = 'audio/x-pn-realaudio';
$fileTypes['ram'] = 'audio/x-pn-realaudio';
$fileTypes['ogg'] = 'audio/x-pn-realaudio';
$fileTypes['wav'] = 'video/x-msvideo';
$fileTypes['wmv'] = 'video/x-msvideo';
$fileTypes['avi'] = 'video/x-msvideo';
$fileTypes['asf'] = 'video/x-msvideo';
$fileTypes['divx'] = 'video/x-msvideo';
$fileTypes['mp3'] = 'audio/mpeg';
$fileTypes['mp4'] = 'audio/mpeg';
$fileTypes['mpeg'] = 'video/mpeg';
$fileTypes['mpg'] = 'video/mpeg';
$fileTypes['mpe'] = 'video/mpeg';
$fileTypes['mov'] = 'video/quicktime';
$fileTypes['swf'] = 'video/quicktime';
$fileTypes['3gp'] = 'video/quicktime';
$fileTypes['m4a'] = 'video/quicktime';
$fileTypes['aac'] = 'video/quicktime';
$fileTypes['m3u'] = 'video/quicktime';
$contentType = $fileTypes[$extension];
header("Cache-Control: public");
header("Content-Transfer-Encoding: binary\n");
header("Content-Type: $contentType");
$contentDisposition = 'attachment';
if($doStream == true){
/* extensions to stream */
$array_listen = array('mp3','m3u','m4a','mid','ogg','ra','ram','wm',
'wav','wma','aac','3gp','avi','mov','mp4','mpeg','mpg','swf','wmv','divx','asf');
if(in_array($extension,$array_listen)){
$contentDisposition = 'inline';
}
}
if (strstr($_SERVER['HTTP_USER_AGENT'], "MSIE")) {
$fileName= preg_replace('/\./', '%2e', $fileName,
substr_count($fileName, '.') - 1);
header("Content-Disposition: $contentDisposition; filename=".$fileName);
} else {
header("Content-Disposition: $contentDisposition; filename=".$fileName);
}
header("Accept-Ranges: bytes");
$range = 0;
$size = filesize($fileLocation);
if(isset($_SERVER['HTTP_RANGE'])) {
list($a, $range)=explode("=",$_SERVER['HTTP_RANGE']);
str_replace($range, "-", $range);
$size2=$size-1;
$new_length=$size-$range;
header("HTTP/1.1 206 Partial Content");
header("Content-Length: $new_length");
header("Content-Range: bytes $range$size2/$size");
} else {
$size2=$size-1;
header("Content-Range: bytes 0-$size2/$size");
header("Content-Length: ".$size);
}
if ($size == 0 ) { die('Zero byte file! Aborting download');}
set_magic_quotes_runtime(0);
$fp=fopen("$fileLocation","rb");
fseek($fp,$range);
while(!feof($fp) and (connection_status()==0))
{
set_time_limit(0);
print(fread($fp,1024*$maxSpeed));
flush();
ob_flush();
sleep(1);
}
fclose($fp);
return((connection_status()==0) and !connection_aborted());
}
/* Implementation */
$filename="shopfile.zip";
$location="file/";
downloadFile($location,$filename,900,false);
?>
但是当它运行时它会得到这个错误: 严格标准:只应在第16行的/home/behzadfar/public_html/shopfile/download.php中通过引用传递变量
警告:无法修改标题信息 - 已在第57行的/home/behzadfar/public_html/shopfile/download.php中发送的标题(由/home/behzadfar/public_html/shopfile/download.php:16开始输出)< / p>
我该如何解决?
答案 0 :(得分:1)
解决问题:
您必须将实际变量传递给end()
,而不是返回数组的函数。所以:
$pieces = explode('.',$fileName);
$extension = strtolower(end($pieces));
PHP's manual end
解释了这一点。
<强>摘录强>
此数组通过引用传递,因为它由函数修改。这意味着你必须传递一个实变量,而不是一个返回数组的函数,因为只有实际的变量可以通过引用传递。
没有中间变量的解决方案
如果您不想使用中间变量,请使用array_pop
代替end
:
$extension = strtolower(array_pop(explode('.',$fileName)));
与已经发送的标题相关的错误出现是因为PHP已经必须向您显示页面上的错误(已传递的内容),因此它阻止了自己修改标题的能力(一旦开始交付,您就无法修改HTTP标头内容)。修复严格标准错误将修复标头错误。
答案 1 :(得分:0)
错误来自这一行:
$extension = strtolower(end(explode('.',$fileName)));
end()
的参数通过引用传递(请参阅manual:mixed end ( array &$array )
因此,您必须将代码更改为:
$array = explode('.',$fileName);
$extension = strtolower(end($array));
再看pathinfo()
,这将是一个更清洁的解决方案:
$extension = pathinfo($fileName, PATHINFO_EXTENSION);
如果它已经是标准php函数的一部分,为什么要自己实现这个函数。
答案 2 :(得分:0)
为什么不用http://php.net/manual/en/function.finfo-file.php替换该数组:
$finfo = new finfo(FILEINFO_MIME_TYPE); // return mime type ala mimetype extension
$contentType = $finfo->file($fileLocation.$filename) ;
你的脚本是以4还是空格开始的?