Increasing a variable by one??

[FoxhoundX]

What I basically want is a page that has a number and a button. When you click the button, it will open a txt file, increase the number by one, save it, and then reload the page, (the number would be one bigger).

<?php
$handle = fopen("countxxx.txt", "r");
$contents = fread ($handle, filesize ("countxxx.txt"));
fwrite($handle, $contents);
fclose($handle);
?>

Is all I have so far, not sure if it's right, and I dont have the thing to increase the number..

[ereptur]

Sounds like you are wanting a counter.

This isn't the cleanest code, but it works. It opens the file counter.txt and reads the contents into $fcontents. It increments it by one and then writes the value back to the file overwriting what was previously there.

$counterfile = './counter.txt';
$fcontents = file($counterfile);
$counter = $fcontents[0];
$counter++;
$fp = fopen($counterfile,'w');
fwrite($fp,$counter,sizeof($counter));
fclose($fp);

I'm sure you can figure out the displaying of the counter yourself.