text: function array_key_exists (key, search) {
    //  discuss at: http://phpjs.org/functions/array_key_exists/
    // original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // improved by: Felix Geisendoerfer (http://www.debuggable.com/felix)
    //   example 1: array_key_exists('kevin', {'kevin': 'van Zonneveld'});
    //   returns 1: true
  
    if (!search || (search.constructor !== Array && search.constructor !== Object)) {
      return false
    }
  
    return key in search
  }
  