Invisible hit counter in php

[ghjk]

I want to put invisible hit counter to multiple pages of web site. I put visible counter like follow. There is a text file which is use to save counts. and there is a php file including the following code.And finally I put echo

echo $hits[0];

to display the hits. Now I want to invisible these hits and also add to multiple pages. Surf the internet and didn't find a answer to my problem. Could some one plese help me...

counter.php

$count_my_page = ("hitcounter.txt");
$hits = file($count_my_page);
$hits[0] ++;
$fp = fopen($count_my_page , "w");
fputs($fp , "$hits[0]");
fclose($fp);

[Dormilich]

what about just not doing the echo?

[ghjk]

But then admin have to access the web folder to check it.

[Dormilich]

what else is the purpose of an invisible counter?

[ghjk]

only admin should see it. I found the solution. just I check the access level and show the hit counter.