If thinkphp uses a certain string to query all records in the data table whose fields contain this string

Question

public function Search_clients($client_str)

{
    
     $sql = 'SELECT * WHERE FIND_IN_SET($client_str,desc)';
     $condition = $this->query($sql);
    
}


写的sql语句不对   
desc是数据表的字段名
$client_str是字段值    

Beginner to learn PHP, please help me solve my doubts

Answer 1

Where is your watch name? . Also, you have to look at the tp manual for the query method.
For example:
$User = M("User"); // Instantiate the User object
$User->where('type=1 AND status=1')->select();