<?php

$dbhost='63.117.30.243';
$dbusername='web_ro';
$dbpassword='user123';

$dbcnx = mysql_connect ($dbhost, $dbusername, $dbpassword);

$dbquery = mysql_query("SHOW DATABASES");

$i = 0;
while ($row = mysql_fetch_assoc($dbquery)) {
    $arr[$i] = $row['Database'];
    echo "<br> ". $i ." = " .$arr[$i];
    $i++;
}

mysql_close($dbcnx);
?>