Differentiate between parameterised and non parameterised functions

Here is the difference between parameterized and non-parameterized functions in PHP:

Parameterized Functions

• Parameterized functions accept one or more input values called parameters or arguments.
• Parameters are defined within the parentheses () after the function name.
• Multiple parameters are separated by commas.
• Parameters act as placeholders for the actual values that will be passed to the function when it is called.
• The function can use the parameter values to perform its operations.
• Parameterized functions provide flexibility and reusability, as they can work with different input values.

Example:

function calculateArea($length, $width) {
    $area = $length * $width;
    return $area;
}

In this example, $length and $width are parameters of the calculateArea() function.

Non-Parameterized Functions

• N...