PHP PDO Add filter to all queries

问题

Is there a way, using JUST PHP PDO (No ORMs) to globally filter all fetch/insert/update/delete operations.

One example is a tenant field (in a multitenant db). I would like to globally add this type of filter to all operations:

tenant = companyA

Once again. NO ORMs, I already know how to do it with SQL Alquemy, Laravel's eloquent and Doctrine. I now want to know if it's possible just with PDO.

回答1:

Create a class extending PDO like

class DB extends PDO {...

Normally i override the __construct() method to get database credentials inside any document and connect to database, don't forget to call on bottom of this method the parent constructor parent::__construct()...

Then you can use your own methods

public function find($params) {
     ...
     $stmt = $this->prepare('')...

     $rows = $stmt->fetch(PDO::FETCH_ASSOC)...
}

Inside your own method you can apply your filters...

来源：https://stackoverflow.com/questions/33219951/php-pdo-add-filter-to-all-queries