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php 下载ppt,pdf,doc,docx
public function download_graduation(){
$graduation_thesis_id = I('graduation_thesis_id');
$download_type = I('download_type'); //1表示论文,2表示论文回复
$graduation_thesis = Db::name('graduation_thesis')->where('graduation_thesis_id',$graduation_thesis_id)->find();
if($download_type == 1) {
$filepath = $graduation_thesis['paper_file'];
}else{
$filepath = $graduation_thesis['guide_file'];
}
if(empty($filepath)){
$this->error('文件不存在');
}
$dir = ".".substr($filepath,0,strrpos($filepath,'/')+1);//文件句柄
$filename = substr($filepath,strrpos($filepath,'/')+1);//文件名称
$type= substr($filepath, strrpos($filepath,'.')+1);//文件后缀
//$filename1:下载文件的名称
if($download_type == 1){
$filename1 = $graduation_thesis['filename'];
}else{
$filename1 = $filename;
}
switch ($type) {
case 'docx':
if(file_exists($dir.$filename)){
$file = fopen($dir.$filename,"r"); // 打开文件
header('Content-Type: application/force-download');
header('Content-Type: application/vnd.openxmlformats');
header('Accept-Ranges:bytes');
header("Accept-Length: ".filesize($dir.$filename));
header("Content-Disposition: attachment; filename=".$filename1);
echo fread($file,filesize($dir.$filename));
$buffer = 1024;
while (!feof($file)) {
$file_data = fread($file,$buffer);
echo $file_data;
}
fclose($file);
}else{
echo "<script>alert('文件不存在')</script>";
echo "<script>window.location='doc.html'</script>";
}
break;
case 'doc':
if(file_exists($dir.$filename)){
$file = fopen($dir.$filename,"r"); // 打开文件
header('Content-Type: application/force-download');
header('Content-Type: application/msword');
header('Accept-Ranges:bytes');
header("Accept-Length: ".filesize($dir.$filename));
header("Content-Disposition: attachment; filename=".$filename1);
echo fread($file,filesize($dir.$filename));
$buffer = 1024;
while (!feof($file)) {
$file_data = fread($file,$buffer);
echo $file_data;
}
fclose($file);
}else{
echo "<script>alert('文件不存在')</script>";
echo "<script>window.location='doc.html'</script>";
}
break;
case 'pdf':
if(file_exists($dir.$filename)){
$file = fopen($dir.$filename,"r"); // 打开文件
header('Content-Type: application/force-download');
header('Content-Type: application/pdf');
header('Accept-Ranges:bytes');
header("Accept-Length: ".filesize($dir.$filename));
header("Content-Disposition: attachment; filename=".$filename1);
echo fread($file,filesize($dir.$filename));
$buffer = 1024;
while (!feof($file)) {
$file_data = fread($file,$buffer);
echo $file_data;
}
fclose($file);
}else{
echo "<script>alert('文件不存在')</script>";
echo "<script>window.location='doc.html'</script>";
}
break;
case 'ppt':
if(file_exists($dir.$filename)){
$file = fopen($dir.$filename,"r"); // 打开文件
header('Content-Type: application/force-download');
header('Content-Type: application/vnd.ms-powerpoint');
header('Accept-Ranges:bytes');
header("Accept-Length: ".filesize($dir.$filename));
header("Content-Disposition: attachment; filename=".$filename1);
echo fread($file,filesize($dir.$filename));
$buffer = 1024;
while (!feof($file)) {
$file_data = fread($file,$buffer);
echo $file_data;
}
fclose($file);
}else{
echo "<script>alert('文件不存在')</script>";
echo "<script>window.location='doc.html'</script>";
}
break;
default:
break;
}
exit();
}
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