PHP强制性文件下载功能的函数代码(任意文件格式)

复制代码 代码如下:

/********************
*@file - path to file
*/
function force_download($file)
{
if ((isset($file))&&(file_exists($file))) {
header("content-length: ".filesize($file));
header('content-type: application/octet-stream');
header('content-disposition: attachment; filename="' . $file . '"');
readfile("$file");
} else {
echo "no file selected";
}
}