Matching empty array always return true

[pskt]

Hi

I'm using php-matcher to match some JSONs and I found an issue.
If in $value will be empty array php-matcher always return true.

For example, as $value I have

{"status":"ok","data":[]}

And as $pattern

{
  "status": "ok",
  "data": [
      {
          "id": @integer@,
          "code": "123987",
          "name": "Anvill",
          "short_description": "ACME Anvill",
          "url": "http://test-store.example.com/p/123987",
          "image": {
          "url": "http://test-store.example.com/i/123987-0.jpg",
          "description": "ACME Anvill"
          },
          "price": 95,
          "promotion_description": "Anvills sale"
      },
      {
          "id": @integer@,
          "code": "123988",
          "name": "Red Anvill",
          "short_description": "Red ACME Anvill",
          "url": "http://test-store.example.com/p/123988",
          "image": {
          "url": "http://test-store.example.com/i/123988-0.jpg",
          "description": "ACME Anvill"
          },
          "price": 44.99,
          "promotion_description": "Red is cheap"
      }
  ]
}

And matcher return true.