<?php 

    echo $_SERVER['PHP_SELF'];

    echo "<br>";

     echo $_SERVER['SERVER_NAME'];

    echo "<br>";

    echo $_SERVER['HTTP_HOST'];

     echo "<br>";

    echo $_SERVER['HTTP_REFERER'];

    echo "<br>";

    echo $_SERVER['HTTP_USER_AGENT'];

    echo "<br>";

    echo $_SERVER['SCRIPT_NAME'];

    ?>