Can someone show me a tutorial in PHP for writing to a text file?

Answer 1

Here's one:

$finame = 'whatever.txt';
$fmode = 'a'; /* append */

if( $file == fopen($finame, fmode) )
{
fputs($file, "How do you like that?");
fclose( $file );
}

Answer 2

http://www.w3schools.com/php/default.asp
try here for starters.