public function zpcjmc($id)
    {
        if($id!=0 && $id!="-1"){
            $arr = DB::table('ppzq')
                ->where('rec_id', $id)
                ->select('rec_id', 'product_name')
                ->first();
        }

        if($id==0){
            $person = array (
                'rec_id' => '0',
                'product_name' => '促销专区不参与厂家活动'
            );
            $arr =(object) $person;
        }elseif($id=='-1'){
            $person = array (
                'rec_id' => '1',
                'product_name' => '其它'
            );
            $arr =(object) $person;
        }
        return $arr;
    }

<?php
$person = array (
   'firstname' => 'Richard',
   'lastname' => 'Castera'
);
 
$p = (object) $person;
echo $p->firstname; // Will print 'Richard'
?>