Error Array to String Conversion - In Yii

Question

Can anyone, please help me on error "Array to String Conversion" in Yii.

Am getting this error "Array to String Conversion" for following code

Here is my code for create :

<div class="row">
    <?php echo $form->labelEx($model,'emp_reporting'); ?>
    <?php 

        $query="select 0 as emp_id,'ALL' as emp_name UNION select emp_id,emp_name from employee_master";
        $result=Yii::app()->db->createCommand($query)->queryAll();
        $ld=CHtml::listData($result,'emp_id','emp_name');

        $x =  array();
    if(!$model->isNewRecord )
    {   
        if( $model->emp_reporting != "") {
            $query="select emp_id,emp_name from employee_master  where emp_id in ($model->emp_reporting)";
            $result=Yii::app()->db->createCommand($query)->queryAll();
            $selected_list=CHtml::listData($result,'emp_id','emp_name');

            foreach ($selected_list as $key => $value)
            {
                $x[$key]=array("selected"=>"selected");
            }
        }

    }

        $this->widget('ext.select2.ESelect2',array(
            'model'=>$model,
            'attribute'=>'emp_reporting',                    
            'data'=>$ld,
            'options'=>array(
                    'placeholder'=>'Select Employee ..',
                     ),  
            'htmlOptions'=>array(
            'multiple'=>'multiple',
            'style'=>'width:200px;',
            'options'=>$x, 
          ),
        ));

     ?>
    <?php echo $form->error($model,'emp_reporting'); ?>
</div>

Answer 1

This error exist when we try to use array as string but without knowing $result , I can't say more but the syntax of listData is like below

public static array listData(array $models, mixed $valueField, mixed $textField, mixed $groupField='')

So according to this $result should be an array of model objects. Try to print $result just above your listdata and see what value it has