Can someone give me a simple example on how to use flock(). I want to write to a text file, and I don't want it to get corrupted by more than one user writing to it at once, so I want to lock it for one user at a time.
How do I add it to this code:
<?
$fp = fopen("file.txt", "w");
fwrite($fp, "Hello World!");
fclose($fp);
?>
Thanks!
