1.先来看下下载所要用的的请求头
header("Content-type:application/octet-stream"); header("Accept-Ranges:bytes"); header("Accept-Length:".$file_Size); header("Content-Disposition: attachment; filename=".$filename);
2.php的文件操作出现的比较早,文件名是中文的时候需要注意转码
$filename=iconv("UTF-8","GB2312",$filename);
//判断路径是否存在 if(!file_exists($filepath)){ echo "文件不存在"; return; } $fp=fopen($filepath,"r"); //取得文件大小 $file_Size=filesize($filepath); header("Content-type:application/octet-stream"); header("Accept-Ranges:bytes"); header("Accept-Length:".$file_Size); header("Content-Disposition: attachment; filename=".$filename); $buffer=1024; $buffer_count=0; while(!feof($fp)&&$file_Size-$buffer_count>0){ $data=fread($fp,$buffer); $buffer_count+=$buffer; echo $data; } fclose($fp);
3.上面的代码有的时候不好使,可以清空(擦掉)输出缓冲区,使用下面的代码即可
ob_clean();
下载之后文件也没有任何的问题
下面是全部代码
<?php function downloadFile($name){ ob_clean(); $filename=$name; $filename=iconv("UTF-8","GB2312",$filename); $filepath="E:\\otherphp\\download\\download\\".$filename; //判断路径是否存在 if(!file_exists($filepath)){ echo "文件不存在"; return; } $fp=fopen($filepath,"r"); //取得文件大小 $file_Size=filesize($filepath); header("Content-type:application/octet-stream"); header("Accept-Ranges:bytes"); header("Accept-Length:".$file_Size); header("Content-Disposition: attachment; filename=".$filename); $buffer=1024; $buffer_count=0; while(!feof($fp)&&$file_Size-$buffer_count>0){ $data=fread($fp,$buffer); $buffer_count+=$buffer; echo $data; } fclose($fp); } downloadFile("桌面截图.png"); ?>