Once the Web server received the uploaded file, it will call the PHP script specified in the form action attribute to process them. This received PHP script can get the uploaded file information through a predefined array called $_FILES. Uploaded file information is organized in $_FILES as a two-dimensional array as:
- $_FILES[$fieldName][‘name’] : Original file name on the browser system.
- $_FILES[$fieldName][‘type’] : the file type determined by the browser.
- $_FILES[$fieldName][‘size’] : Number of bytes of the file content.
- $_FILES[$fieldName][‘tmp_name’] : a temporary filename of the file in which the uploaded file was stored on the server.
- $_FILES[$fieldName][‘error’] an error code associated with this file upload.
- The $fieldName is the name used in the <INPUT,>.
