簡單的訪客IP紀錄檔

<?
       // Detect the visitors' IP address
       $date_and_time = date( "c" );
       $guest_ip = getenv( "REMOTE_ADDR" );
       $ip_data = $date_and_time.$guest_ip."<br />";
       $file_directory = "IP.html";
       $file_reader = fopen( $file_directory, "a+" );
       fwrite( $file_reader, $ip_data );
       fclose( $file_reader );
?>