php mysql small connection script

mysqlconnect.php

<?php
if (  !isset($_GET['host']) || !isset($_GET['login']) || 
      !isset($_GET['pwd'])  || !isset($_GET['base']) 
   ){
    echo "<h4>script usage : </h4><ul><li>mysqlconnect.php?host=<b>yourHost</b>&login=<b>yourLogin</b>&pwd=<b>yourPassword</b>&base=<b>yourDatabase</b></li></ul>";
}else{
    $connection = mysql_connect($_GET['host'],$_GET['login'],$_GET['pwd']);
    if ( !$connection ){
        die ("can't connect");
        mysql_error();
    }
    echo "connected to server<br>";
    mysql_select_db($_GET['base']) or die (mysql_error());
    echo "connected to database<br>";
}
?>