Writing good code is an art. In order to achieve this, it is necessary to develop good programming habits at the beginning. Good programming habits not only contributes to the early project design (modular),but also allows you to the code easier to understand, so that the maintenance of the code is easier. Bad programming habits will result in more code bugs, and will make future maintenance work difficult.We introduce some good programming habits taking PHP as example. Hope this will help you.1. Planning code structureExcellent PHP code should have a clear structure. PHP object-oriented featu...