Omnipay\Alipay\Common\Signer::getParamsToSign PHP Метод

    public function getParamsToSign()
    {
        $params = $this->params;
        $this->unsetKeys($params);
        $params = $this->filter($params);
        if ($this->sort) {
            $this->sort($params);
        }
        return $params;
    }

 public function testGetParamsToSign()
 {
     $params1 = ['bbb' => '2222', 'ccc' => '3333', 'aaa' => '111', 'apple' => 'jobs'];
     $signer = new Signer($params1);
     $signer->setIgnores(['apple']);
     $params = $signer->getParamsToSign();
     $this->assertSame(['aaa' => '111', 'bbb' => '2222', 'ccc' => '3333'], $params);
 }