title: search form using Zend Form with validators and inputFIlters
body: <p>Is there an example to see how one can implement a search form using Zend Forms in Zend Framework2. I needed a search form for every category and every category has different columns in the database which needs to be searched. </p>
  
  <p>Let me say I have a Country category, under this there are many elements which can be searched like country name, states belonging to the county, language spoken in the country and so on. </p>
  
  <p>So when a user types either a state or country or language I need to display all possible details. Is there something like a module already existing in Zend Framework2 or I should be implementing everything form scratch. In case if I need to do all from scratch, then what is the best way to approach this.</p>
  
  <p>Im using Doctrine ORM to communicate with my DB. So in case if somebody has already worked on both of these then your suggestions would be appreciated.</p>