A parameterized function in PHP is a function that accepts one or more parameters (also known as arguments) when it is called. These parameters can be used within the function to perform some operation, and may also be used to return a value or modify a variable outside of the function.
Here’s an example of a parameterized function that takes two numbers as arguments and returns their sum:
function add($num1, $num2) { $sum = $num1 + $num2; return $sum; } $result = add(2, 3); // calls the add function with arguments 2 and 3 echo $result; // outputs 5
In this example, the add
function is defined to take two parameters $num1
and $num2
. When the function is called with the values 2
and 3
, it computes their sum and returns the result, which is then stored in the $result
variable. Finally, the value of $result
is echoed to the screen.
Parameterized functions in PHP can take any number of arguments, and these arguments can be of any type, including arrays and objects. By passing arguments to a function, you can make your code more flexible and reusable, and reduce the amount of duplicated code.