PHPAdvanceCode

[Home] [Edit this page] [Recent Changes] [Special Pages] [Help]

PHPAdvanceCode

Advanced PHP Programming

--------------------------------------------------

This tutorial covers advanced issues of PHP programming. It assumes that you know at least how to deal with files in PHP.

Writing a Counter for your Homepage

One of the easiest things to do with PHP is, writing a counter for your homepage.

 //the filename for storing the counter 
$filename = "guestbook.txt";
 //our counter variable 
$counter = 0;
 //checking if the file exists. if so, write the counter into it
if(file_exists($filename))
{
  $file = fopen($filename,"r");
   if($file)
    {
      $counter = fgets($file,255);
      fclose($file);
    }
  
}
 //the page has been updated, so increase the counter 
$counter++;
$file = fopen($filename,"w");
if($file)
{
  fputs($filename,"w");
  fclose($file);
}
//Here comes the HTML part
<html>
<head><title></title></head>
<body>
<? 
echo "You are visitor number: $counter on this page";
?>
</body>
</html>

This script is rather straightforward. We store the counter variable in a file, "guestbook.txt" and increase the variable each time the site is updated or loaded again. The HTML part needs no further explanation. We simply print the value of the $counter variable on the screen. Thats it.

last edited (June 7, 2005) by ITA, Number of views: 6399, Current Rev: 8 (Diff)

[Edit this page] [Page history] [What links here] [Discuss this topic] [Printer Friendly]