PHP

**To store current date,time in a COOKIE**
<?php
$intwomonths = 60*60*24*60 + time();
setcookie('lastvisit', date("G:i- m/d/y"),$intwomonths);
if(isset($_COOKIE['lastvisit']))

{
$visit = $_COOKIE[lastvisit];
echo "your last visit was-".$visit;
}
else
echo "you have got some stale cookies!";
?>

**To store page view counts in SESSION**
<?php
	session_start();

	if(isset($_SESSION['count']))
	{
		echo "Your session count: ".$_SESSION['count']."<br />";
		$_SESSION['count']++;
	}
	else
	{
		$_SESSION['count'] = 1;
		echo "Session does not exist";
	}

?>

**XHTML form**
<form>
    <fieldset>
        <legend>Log In</legend>
        <label>Username: <input type="text"></label>
        <label>Password: <input type="password"></label>
        <input type="submit" value="Submit">
    </fieldset>
</form>

**READ A FILE**
<html>

   <head>
      <title>Reading a file using PHP</title>
   </head>

   <body>

      <?php
         $filename = "tmp.txt";
         $file = fopen( $filename, "r" );

         if( $file == false ) {
            echo ( "Error in opening file" );
            exit();
         }

         $filesize = filesize( $filename );
         $filetext = fread( $file, $filesize );
         fclose( $file );

         echo ( "File size : $filesize bytes" );
         echo ( "<pre>$filetext</pre>" );
      ?>

   </body>
</html>

**WRITE A FILE**
<?php
   $filename = "/home/user/guest/newfile.txt";
   $file = fopen( $filename, "w" );

   if( $file == false ) {
      echo ( "Error in opening new file" );
      exit();
   }
   fwrite( $file, "This is  a simple test\n" );
   fclose( $file );
?>
<html>

   <head>
      <title>Writing a file using PHP</title>
   </head>

   <body>

      <?php
         $filename = "newfile.txt";
         $file = fopen( $filename, "r" );

         if( $file == false ) {
            echo ( "Error in opening file" );
            exit();
         }

         $filesize = filesize( $filename );
         $filetext = fread( $file, $filesize );

         fclose( $file );

         echo ( "File size : $filesize bytes" );
         echo ( "$filetext" );
         echo("file name: $filename");
      ?>

   </body>
</html>