Leveraging the Power of Variables
It is important to be aware of variable masking when writing code, as it can lead to unexpected results. To avoid this, it is best practice to use unique variable names and to avoid using the same name for multiple variables. Additionally, it is important to use descriptive variable names that clearly indicate the purpose of the variable. This will help to make the code more readable and easier to debug.
Control structures such as if/else can also be used to determine which functions should be called or to loop through arrays of data from a database.
When calling functions there are two ways: call by value and call by reference. The former is used when you need the value contained within a variable passed into a function, while the latter is used when you need to pass several variables whose values should be changed within the function.