Here is the code for an html form the let user to select a file to upload:
<form enctype=”multipart/form-data” action=”savefile.php” method=”POST”>
Choose a file to upload: <input name=”uploadedfile” type=”file” /><br/>
<input type=”submit” value=”Upload File” />
</form>

enctype=”multipart/form-data” should be used to function properly.
savefile.php responsible for saving the uploaded file.

After the user submit the form, the file will be posted to [...]