note 60279 added to function.str-replace

You can use str_replace to find out TLD. <?php $ip_address = $_SERVER['REMOTE_ADDR']; $hostname = gethostbyaddr ($ip_address); $tld = str_replace (".","", strrchr ($hostname,".")); echo $tld; //outputs tld that requested script ?> This will print 'net', if request was made from www.hostname.net, 'com' if requested from www.myip.com and so on. Useful in statistic collecting scripts. Also can be used to find file extensions: <?php $filename = "mypicture.jpg"; $extension = str_replace (".","", strrchr ($filename,".")); echo $extension; //outputs jpg //for file with multiple extension $filename2 = "mypicture.txt.jpg.zip.gif"; $extension = str_replace (".","", strrchr ($filename2,".")); echo $extension; //outputs gif ?> ---- Manual Page -- http://www.php.net/manual/en/function.str-replace.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+60279 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+60279&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+60279&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+60279&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+60279&report=yes&reason=useless Delete: non-english -- http://master.php.net/manage/user-notes.php?action=delete+60279&report=yes&reason=non-english Delete: already in docs -- http://master.php.net/manage/user-notes.php?action=delete+60279&report=yes&reason=already+in+docs Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+60279&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+60279&report=yes Search -- http://master.php.net/manage/user-notes.php