title: laravel eloquent integers returned as strings in mssql
body: <p>i am running mssql2008 with laravel 5.0 and every time i retrieve data from DB
  seems like everything is been returned as string no matter which format i have it stored on the database.</p>
  
  <pre><code>{
      id: "1",
      name: "This is crazy",
      owner_id: null,
      is_local: "0",
      vessel_type_id: "3",
      registration_number: "34535",
      gross_register_tonnage: "34",
      year_built: "3453",
      status: "active",
      deleted_at: null,
      created_at: "Nov 5 2014 03:25:38:577PM",
      updated_at: "Nov 17 2014 09:06:40:000AM"
  }
  </code></pre>
  
  <p>i know we can use eloquent mutators to format fields separately but that's no way to do this as there are multiple integer fields and i don't wanna create a function for each and every field. </p>
  
  <p>this is not a problem with laravel Response::json i have dumped the array using var_dump and seems all fields are been returned as strings.</p>
  
  <p>i have had this problem before but that was with mysql and it turned out it was an issue with mysql drivers had to install php5_mysqlnd.</p>
  
  <p>i am using Ubuntu 14.04 .</p>