count.inc

<?php
$counter_file = 'count.inc';
clearstatcache();
ignore_user_abort(true);
if (file_exists($counter_file)) {
$fh = fopen($counter_file, 'r+');
while(1) {
if (flock($fh, LOCK_EX)) {
$counter = chop(fgets($fh, 1));
$counter = chop(fread($fh, filesize($counter_file)));
fflush($fh);
ftruncate($fh, ftell($fh));
rewind($fh);
fwrite($fh, $counter+1);
flock($fh, LOCK_UN);
break;
}
}
}
fclose($fh);
?>

For Exmple:
this is the $counter man who watch this page

$counter