comfort zone [BACK TO TOP] Meaning: The temperature range (between 28 and 30 degrees Centigrade) at which the naked human body is able to maintain a heat balance without shivering or sweating
OET is an English language test that assesses the language and communication skills of healthcare professionals who seek to register and practise in an English-speaking environment.
isset() - Determine if a variable is set and is not NULL. array_keys() - Return all the keys or a subset of the keys of an array. in_array() - Checks if a value exists in an array. property_exists() - Checks if the object or class has a property.