json - Zend error Connection -

i have problem code, first code

<?php      require_once('zend/json.php');     require_once('zend/db.php');     //require_once 'zend/db/adapter/pdo/pgsql.php';      class jsonvi     {         protected $_db;         public function _koneksi ()         {             try              {                 $this->_db = zend_db::factory('pdo_pgsql',array(                  'host'=>'localhost',                 'username'=>'stet',                 'password'=>'test',                 'dbname'=>'test'             ));                 return $this->_db;                               }             catch(zend_db_exception $e)             {                 return $e->getmessage();             }     }         public function getdata()         {             $db = $this->_koneksi();             try             {                      $sql = "select * info   ";                 $da = $db->fetchall($sql);                 $num = count($da);                       ($a=0;$a<$num;$a++)                 {                     $data = $db->fetchall($sql);                     return $data;                 }             }             catch (zend_db_exception $e)             {                 return $e->getmessage();             }         }     }     $view = new jsonvi();     $view = $view->getdata();     echo zend_json::encode($view);  ?> 

and works well, want make

<?php      include ('table.php');     include ('config.php');     require_once('zend/json.php');     require_once('zend/db.php');     require_once 'zend/db/adapter/pdo/pgsql.php';      class jsonvi     {         protected $_db;         public function _koneksi ()         {             try              {                 $this->_db = zend_db::factory('pdo_pgsql',array(                  'host'=>$dbhost,                 'username'=>$dbuser,                 'password'=>$dbpass,                 'dbname'=>$dbdb             ));                 return $this->_db;                               }             catch(zend_db_exception $e)             {                 return $e->getmessage();             }     }         public function getdata()         {             $db = $this->_koneksi();             try             {                      $sql = "select * ".$table;                 $da = $db->fetchall($sql);                 $num = count($da);                       ($a=0;$a<$num;$a++)                 {                     $data = $db->fetchall($sql);                     return $data;                 }             }             catch (zend_db_exception $e)             {                 return $e->getmessage();             }         }     }     $view = new jsonvi();     $view = $view->getdata();     echo zend_json::encode($view);       ?> 

i don't know whats wrong code, need help. error message notice: undefined variable: dbdb in c:\wamp.... config.php have code $dbpass = 'test'; , that, i'm creating simple web , want make code other database , aplikasi, changed config.php , table.php table.php maybe work if config.php work.

thanks.

you using class , not paying attention variable scope.

i understand have variables values db connection in config.php file. although these variables available inside script file include not available , accessible inside class. difference constants define (or variables inside global not idea).

you create config class inside config.php , set values properties instantiate class inside _koneksi method. , use require_once instead of include.

update here's example similar file include ('config.php'); same declaring variables directly before class begins.

// variable defined outside class $foo = 'foo';  class demo {     public $bar = 'bar';      function test()     {         $foobar = 'foobar';         echo 'class property $bar is:' . $this->bar . php_eol;         echo 'local variable $foobar is:' . $foobar . php_eol;     }      function run()      {         if (isset($foo)) {             echo 'global variable $foo is:' . $foo . php_eol;         } else {             // have problem.             // variables outside class not available.             echo 'global variable $foo not found' . php_eol;         }     } }  $demo = new demo(); $demo->test();       // class property $bar is:bar                      // local variable $foobar is:foobar  $demo->run();        // global variable $foo not found  echo 'variable $foo is: ' . $foo . php_eol;  // class property $bar is:bar