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php实现文件下载更能介绍_php技巧

May 17, 2016 am 09:07 AM
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PHP用代码实现文件下载,阅读PHP用代码实现文件下载,我们一般实现下载都是调用url来下载,但是遇到ie能识别打开的文件就不能用这种方式了,比如下载一个图片、html网页等,这时就需要编程来实现,以下php代码可以解决:?if( empty($_GET[ 我们一般实现下载都是调用url来下载,但是遇到ie能识别打开的文件就不能用这种方式了,比如下载一个图片、html网页等,这时就需要编程来实现,以下php代码可以解决:

复制代码 代码如下:


if( empty($_GET['FileName'])|| empty($_GET['FileDir'])|| empty($_GET['FileId'])){
echo'<script> alert("非法连接 !"); location.replace ("index.php") </script>'; exit();
}
$file_name=$_GET['FileName'];
$file_dir=$_GET['FileDir'];
$FileId=$_GET['FileId'];
$file_dir = $file_dir."/";
if (!file_exists($file_dir.$file_name)) { //检查文件是否存在
echo "文件找不到";
exit;
} else {
$file = fopen($file_dir . $file_name,"r"); // 打开文件
// 输入文件标签
Header("Content-type: application/octet-stream");
Header("Accept-Ranges: bytes");
Header("Accept-Length: ".filesize($file_dir . $file_name));
Header("Content-Disposition: attachment; filename=" . $file_name);
// 输出文件内容
echo fread($file,filesize($file_dir . $file_name));
fclose($file);
exit();
}
?>
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