In the previous section, we skimmed over creating a form and using it without going into any specific details. Now, let's look at what we actually do to define and use a form.
As described in the previous section, we begin by creating a class that extends moodleform. Then, we add a definition function so that we can create all of our form elements. Next, we will describe the functions that we can use to create our form.
A form element is a standard HTML form structure, such as a drop-down menu, text entry box, or radio button, which can be used to extract information interactively from a web user. A form element object is a code structure that contains all of the data and code to display, validate, and extract from a form element.
The two main functions to add form elements to your form are addElement and createElement. These are essentially the same function, except that createElement returns the created form element object without...