php - Exception information: Message: SQLSTATE[HY093]: Invalid parameter number: no parameters were bound -


i have code here that, has search , post information selected in table above add button, search works im having problem post table function. these lines shows have errors.

c:\xampp\htdocs\portal-gep-2\application\models\serviceproviders.php(68): zend_db_table_abstract->fetchrow(object(zend_db_table_select))

public function getname($id) {     $select = $this->select();     $select->where('service_provider_id = ?', $id);      $result = $this->fetchrow($select);  //this line     return $result['service_provider_name'];  }

#6 c:\xampp\htdocs\portal-gep-2\application\modules\admin\controllers\ajaxcontroller.php(1104): model_serviceproviders->getname(null)

    public function postserviceprovideraction()          {             $form = new form_industrialtable();                    $this->view->form = $form;              if(!$form->isvalid($_post))              {                  $values=$form->getvalues();             }              $sp = $this->getrequest()->getpost('serviceprovider', null);               $mdlserviceprovider = new model_serviceproviders();             $serviceprovider  = $mdlserviceprovider ->getname($id); //this line               $rtn_array= array(  'sp'    => $sp,                                                          'serviceprovider ' => $serviceprovider);                         $this->_helper->layout->disablelayout();              $this->_helper->viewrenderer->setnorender();              echo zend_json::encode($rtn_array);  }

you don't put initial value $id it's null causes error.

you want sql query select * service_providers service_provider_id = 50, have provide id want find (50 in example). need add value variable $id before using in $select->where('service_provider_id = ?', $id);, code never put value variable $id.

if i'm guessing idea need change line:

$serviceprovider  = $mdlserviceprovider ->getname($id);

to:

$serviceprovider  = $mdlserviceprovider ->getname($sp);

also part of code unnecessary nothing:

        $form = new form_industrialtable();                $this->view->form = $form;          if(!$form->isvalid($_post))          {              $values=$form->getvalues(); //you never use $values         }

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