Problem creating search. What it is?

Question

Yii

I display data from the table by id_cart that came from the search. Instead of showing data, it shows:
O:18:"yii\db\ActiveQuery":32:{s:3:"sql";s:48:"SELECT * FROM clients WHERE id_cart = 9455958663";s: 2:"on";N;s:8:"joinWith";N;s:6:"select";N;s:12:"selectOption";N;s:8:"distinct";N;s: 4:"from";N;s:7:"groupBy";N;s:4:"join";N;s:6:"having";N;s:5:"union";N;s: 6:"params";a:0:{}s:18:"queryCacheDuration";N;s:20:"queryCacheDependency";N;s:27:"yii\base\Component_events";a:0:{} s:35:"yii\base\Component_eventWildcards";a:0:{}s:30:"yii\base\Component_behaviors";a:0:{}s:5:"where";N;s:5: "limit";N;s:6:"offset";N;s:7:

Answer 1

This is an object packed via serialize

An object

object yii\db\ActiveQuery [
  "sql" => "SELECT * FROM clients WHERE id_cart = 9455958663",
  "on" => null,
  "joinWith" => null,
  "select" => null,
  "selectOption" => null,
  "distinct" => null,
  "from" => null,
  "groupBy" => null,
  "join" => null,
  "having" => null,
  "union" => null,
  "params" => [],
  "queryCacheDuration" => null,
  "queryCacheDependency"=> null,
  "yii\base\Component_events" => [],
  "yii\base\Component_eventWildcards" => [],
  "yii\base\Component_behaviors" => [],
  "where" => null,
  "limit" => null,
  "offset" => null,
  "orderBy" => null,
  "indexBy" => null,
  "emulateExecution" => false,
  "modelClass" => "frontend\models\Clients",
  "with" => null,
  "asArray" => null,
  "multiple" => null,
  ...
]

Answer 2

You have an ActiveQuery class object. most likely you need to insert
queryOne() or queryAll() at the end