<?php 
/**
* [download description]
* @param  [type] $file     [下载的文件]
* @param  [type] $filename [下载后的文件名]
* @return [type]           [description]
*/
function download($file,$filename){
if(file_exists($file))
{
$length = filesize($file);
$fileName = iconv('utf-8', 'gb2312', $fileName);
$suffix = substr($file,strrpos($file,'.'));//获取文件后缀名
$down_name = $fileName.$suffix;//下载后文件名
header("Content-type: application/octet-stream");
header("Content-Length:".$length);
header("Content-Disposition: attachment; filename=".$down_name);
readfile($file);
}else{
return false;
}
} 

文章来源: php 卸载文件函数

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