9th June 2014. The following code snippet will help to sort multi-dimensional arrays by a value of one of the elements. If you look at the code below we have an array populated with 3 other arrays, each of them has an ID element, a title element and an order element.
Environmental allergies, also known as seasonal allergies, hayfever or allergic rhinitis occur when your immune system overreacts to particles in the air that you breathe. Your body's defence system (immune system) attacks the particles in your body, causing symptoms such as sneezing and a runny nose.
Lifestyle Changes. People with existing allergies should avoid irritants or allergens. These triggers include: 1  Pollen. 2  This is the primary cause of allergic rhinitis. 3  Dust mites, specifically mite feces, which are coated with enzymes that contain a powerful allergen. 4  These are the primary allergens inside the home.