<?php
    $host= "192.168.0.150";
    $port="3050";
    $database="D:/C2 Sistemas/Sigef/Banco/SIGEF.FDB";
    $stringConexao = $host.'/'.$port.':'.$database;
    $user = "SYSDBA";
    $pass = "masterkey";

    $con = new PDO('firebird:dbname='.$stringConexao, $user, $pass)or die('Não Conectou!');
    echo 'Conectou!';
    $sql = "SELECT CLI_MATRICULA, CLI_NOME FROM CLIENTES";
    $query = $con->prepare($sql);
    $query->execute();
    while ($linha=$query->fetch()){
        echo ($linha[0]."\x09".$linha[1]."\x0a");
    }
?>