php mysql download file from url to database

PHP MYSQL DOWNLOAD FILE FROM URL TO DATABASE HOW TO
PHP MYSQL DOWNLOAD FILE FROM URL TO DATABASE CODE

This part is the one that usually causes the most confusion.

Make sure there are some files in thereĮcho 'There are no files in the database' So, now that we have a couple of files in our database, we need to create a list of files and link them so they can be downloaded: '', NOW()Įcho 'Success! Your file was successfully added!' Įcho 'An error accured while the file was being uploaded. ' $data = $dbLink->real_escape_string(file_get_contents($_FILES )) $mime = $dbLink->real_escape_string($_FILES) This file needs to check if a file has been uploaded, make sure it was uploaded without errors, and add it to the database: This is the file we are going to build it this phase of the process. In the form we built in phase 1, we set the action property to 'add_file.php'. If it is set any other way, or not set at all, your file is probably not going to be transmitted correctly.Īt the bottom, we have a link to the list we will create in phase 3. As it is, when sending files, this must be set to 'multipart/form-data'.

PHP MYSQL DOWNLOAD FILE FROM URL TO DATABASE HOW TO

This tells the browser how to send the form data to the server. Note the third attribute of the element, 'enctype'. One table with a BLOB field for the file data and a few fields for various pieces of information relating to the file: Now, using this summary as a guide, lets start writing our program. Then we set a few headers, letting the browser know what to expect, before finally sending the contents of the file. We start by using the MySQL functions, and the ID sent by phase 3, to fetch the file data from the database. The part where we fetch the file and send it to the client's browser. The fourth, and final, part is the one that is most confusing about this process. The only problem here would be the fact that the file does not exists on the server, so how do we create a link to it? That is a problem handled by phase 4, all we need to do in phase 3 is create a link with the ID of the file to be downloaded embedded in the URL. The third phase is to list all files that have been uploaded and saved on the database, with a link so it can be downloaded. This is a similar process as the one used when uploading a file to the file-system, but using the MySQL functions rather than the file-system functions. The second phase involves reading the uploaded file, making sure it was uploaded successfully and adding it to the database. This is the simplest part of the process, requiring only a basic HTML form. The first phase of the program is getting the file from our users onto the server where our PHP can interact with it. We only need a single table, containing a BLOB field for our file and various other fields to store information on our file, such as name, size, type. This is not a complex design, as we are not talking about creating some complex filing system. Just so we know what we are going to write before we write it.īefore we start on the program, we need to design the database. HTML Forms and how to handle POST data in PHP.Īs with all programs, before we start writing we need to plan a little ahead.To get through this smoothly, you should be familiar with the following: Having said that, this article demonstrates how you can upload a file from a browser into MySQL, and how to send the files back to the browser. This is something you should carefully consider before using this in a real-life application.

PHP MYSQL DOWNLOAD FILE FROM URL TO DATABASE CODE

There are some downsides to this method though, such as decreased performance and added complexity to both your PHP code and your database structure. This gives you - or rather: MySQL - complete control over the file data, rather than just the location of the file on the server. However, you may find yourself in situations where you would want to keep the file itself with the other data in your database. This is generally considered to be the easiest and fastest way to store files. In situations where your PHP application needs to store entire files, the preferred method is to save the file onto the server’s file-system, and store the physical location of the file in your database. You may be wondering why you would want to put your files “into” the database, rather than just onto the file-system.

Php mysql download file from url to database