Uploading Files with PHP

This script will allow you to upload files from your browser to your hosting, using PHP. The first thing we need to do is create an HTML form that allows people to choose the file they want to upload.

 <form enctype="multipart/form-data" action="upload.php" method="POST">
 Please choose a file: <input name="uploaded" type="file" /><br />
 <input type="submit" value="Upload" />
 </form> 

This form sends data to the file "upload.php", which is what we will be creating next to actually upload the file.

 The actual file upload is very simple:

 <?php 
 $target = "upload/"; 
 $target = $target . basename( $_FILES['uploaded']['name']) ; 
 $ok=1; 
 if(move_uploaded_file($_FILES['uploaded']['tmp_name'], $target)) 
 {
 echo "The file ". basename( $_FILES['uploadedfile']['name']). " has been uploaded";
 } 
 else {
 echo "Sorry, there was a problem uploading your file.";
 }
 ?> 

This very small piece of code will upload files sent to it by your HTML form.

1. The first line $target = "upload/"; is where we assign the folder that files will be uploaded to. As you can see in the second line, this folder is relative to the upload.php file. So for example, if your file was at www.yours.com/files/upload.php then it would upload files to www.yours.com/files/upload/yourfile.gif. Be sure you remember to create this folder!
2. We are not using $ok=1; at the moment but we will later in the tutorial.
3. We then move the uploaded file to where it belongs using move_uploaded_file (). This places it in the directory we specified at the beginning of our script. If this fails the user is given an error message, otherwise they are told that the file has been uploaded.

 These few lines of code we have given you will allow anyone to upload data to your server. Because of this, we recommend that you do not have such a simple file uploader available to the general public. Otherwise, you might find that your server is filled with junk or that your server's security has been compromised.