Connect to a remote Oracle BD

Hi!! how can i connect to a remote oracle bd that its in my network? i can connect with Toad, by cmd with sqlplus, but i cant connect with php ?
how can i do it??
im using a connection class that works when i upload files in localhost, but when i test files in my pc it doesnt.

[code=php]
<?php
class Db
{
var $db_USER = “”;
var $db_PASS = “”;
var $base = “”;
var $dbc = 0;
var $cur;

function Db($user, $pass)
{
$this->db_USER = $user;
$this->db_PASS = $pass;
$this->dbc = ora_logon($this->db_USER,$this->db_PASS);
$cur=ora_open($this->dbc);
}
function consulta($sql=””)
{
$cur=ora_open($this->dbc);
$parse = ora_parse($cur,$sql);
$result = ora_exec($cur);
return($result);
}
function close_db()
{
ora_close($this->dbc);
}
}
?>
[/code]

It works for the connection, if you see there is something wrong in the file, please let me know…this is the instruction to connect from the php that includes the file.

[code=php]
require_once(‘conexion.php’);
$miconexion = new Db(“siges@prueba”,”siges”) ;
$qid = $miconexion->consulta(select * from table);
[/code]

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