Read and write .conf file using PHP

I need PHP code to do the following: 1. Read a .conf file (where ";" starts comments, sections are bracketed, and parameter values are set using "name = value" format) and display it in a web form that can be edited. 2. Take the edited values and write them to a file specified in a field on the form from 1 above. 3. Allow the user to download the new file, but also keep a copy on the server. See below for more details and sample info. ## Deliverables Sample file ([login to view URL]) contents are: ; settings sample [general] ; server network settings server_ip = "[login to view URL]" subnet_mask = "[login to view URL]" ;filename for server log log_file_path = "/mnt/abc/[login to view URL]" ; Below are settings related to email [smtp] ; enable smpt logging to a file smtp_log_to_file = 1 PHP 1 would build an html form based on a template .conf file that resides on the server with the php files. The form would be divided into sections with labels and fields : <h2>General</h2> <table> <tr><td>SERVER IP<td><input type="text" value="[login to view URL]" name="server_ip"> <tr><td>SUBNET MASK<td><input type="text" value="[login to view URL]" name="subnet_mask"> <tr><td>LOG FILE PATH<td><input type="text" value="/mnt/abc/[login to view URL]" name="log_file_path"> <h2>SMTP</h2> <tr><td>SMTP LOG TO FILE<td><input type="text" value="1" name="smtp_log_to_file"> <h2>File</h2> Enter Filename: <input type="text" name="filename" value="[login to view URL]"> <input type="button" onclick="[login to view URL]" value="Generate File"> When submitted, the form would generate a new .conf file , named based on the fielname in the "filename" input field. The user could download that file and the file should reside on teh server. Thanks