Example of using Zend_Db independent from Zend Application

Zend_db_ex.php

<?php
#index.php

// Assuming the Following directory structures
//
//   |-- index.php
//   `-- library
//       `-- Zend
//           |-- Db
//           |-- Db.php
//           |-- Loader
//           |-- Loader.php
//           `-- Exception.php


// Ensure library/ is on include_path
set_include_path(implode(PATH_SEPARATOR, array(
            realpath('./library'),
            get_include_path(),
        )));


// Register autoloader
require_once('library/Zend/Loader/Autoloader.php');
Zend_Loader_Autoloader::getInstance();

// Get Db adapter
$db = Zend_Db::factory('pdo_mysql', array(
            'host' => '127.0.0.1',
            'username' => 'someUsername',
            'password' => 'somePassword',
            'dbname' => 'databaseName'));

// En example query
$stml = $db->query('select * from SOME_TABLE');

var_dump($stml->fetchAll());
?>