PHP-implemented file direct output download

Source: Internet
Author: User

Are you sure you want to laugh at me and say "download files" is so simple? Of course it is not as simple as you think. For example, if you want the customer to fill out a form before downloading a file, your first thought must be "Redirect, check whether the form is complete and complete. Then, point the website address to the file so that the customer can download the file. For example, the following code is compiled by the author:


// Check whether all FORM fields are complete...

If ($ form_completed ){

Header ("Location: ");




Or the following situations:

"<A href =" Id = 124524 "> Start File Download </a>"

The ID method is used to receive the number of the file to be downloaded, and then the "Redirect" method is used to connect to the actual website.

If you want to create an e-commerce website for "online shopping" and consider security issues, you do not want users to directly copy the website to download the file, I suggest you use PHP to directly read the actual file and then download it. The procedure is as follows:


$ File_name = "info_check.exe ";

$ File_dir = "/public/www/download /";

If (! File_exists ($ file_dir. $ file_name) {// check whether the file exists

Echo "file not found ";


} Else {

$ File = fopen ($ file_dir. $ file_name, "r"); // open the file

// Input file tag

Header ("Content-type: application/octet-stream ");

Header ("Accept-Ranges: bytes ");

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.