yii2 determines whether the table exists

It is divided into two steps: (Recommended learning: yii tutorial)

The first step is to find out the All table names are obtained as two-dimensional arrays.

The second step is to determine whether the table name exists in the two-dimensional array

I will post my code below.

$table_name =‘table’;
        $juge = $handle->createCommand("show tables ")->queryAll();
     //下面的deep_in_array()方法是自己写的方法，判断是否存在值是否存在二维数组中，yii2中调用本类方法，可以去掉action
        $cun =  $this->deep_in_array($table_name,$juge);
          if(!$cun){
              echo json_encode("nodata");
              return;
          }

rrree

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