How to use text to count visits in php_php tips

the example in this article describes how php uses text to count visits. share it with everyone for your reference, the details are as follows:

method 1:

$fp = fopen("counter.txt", "r+"); while(!flock($fp, lock_ex)) { // acquire an exclusive lock // waiting to lock the file } $counter = intval(fread($fp, filesize("counter.txt"))); $counter++; ftruncate($fp, 0); // truncate file fwrite($fp, $counter); // set your data fflush($fp); // flush output before releasing the lock flock($fp, lock_un); // release the lock fclose($fp);

method 2:

counter.php file:

usage: