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.
A lot, as it turns out. Allergies and asthma often occur together. The same substances that trigger your hay fever symptoms, such as pollen, dust mites and pet dander, may also cause asthma signs and symptoms. In some people, skin or food allergies can cause asthma symptoms. This is called allergic asthma or allergy-induced asthma. James T C Li, M.D., Ph.D., a Mayo Clinic allergy specialist, answers questions about the link between allergies and asthma.