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.
You probably know that pollens from trees, grasses, and weeds cause allergic rhinitis. Many people have allergies to dust mites, animal dander, cockroaches, and mold as well. Things in the workplace, such as cereal grain, wood dust, chemicals, or lab animals, can also cause allergic rhinitis. If you are allergic to pollens, you may have symptoms only at certain times of the year.