php实现文件下载简单示例(代码实现文件下载)_PHP教程

代码如下:
public function downloads($name){
$name_tmp = explode("_",$name);
$type = $name_tmp[0];
$file_time = explode(".",$name_tmp[3]);
$file_time = $file_time[0];
$file_date = date("Y/md",$file_time);
$file_dir = SITE_PATH."/data/uploads/$type/$file_date/";

if (!file_exists($file_dir.$name)){
header("Content-type: text/html; charset=utf-8");
echo "File not found!";
exit;
} else {
$file = fopen($file_dir.$name,"r");
Header("Content-type: application/octet-stream");
Header("Accept-Ranges: bytes");
Header("Accept-Length: ".filesize($file_dir . $name));
Header("Content-Disposition: attachment; filename=".$name);
echo fread($file, filesize($file_dir.$name));
fclose($file);
}
}

示例2:代码实现文件下载

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：

代码如下:
if( empty($_GET['FileName'])|| empty($_GET['FileDir'])|| empty($_GET['FileId'])){
echo''; 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();
}
?>

http://www.bkjia.com/PHPjc/739781.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/739781.htmlTechArticle 代码如下:

public function downloads($name){ $name_tmp = explode("_",$name); $type = $name_tmp[0]; $file_time = explode(".",$name_tmp[3]); $file_time = $file_time[0...