Question

Discuss in detail about User define Functions with a suitable example.

Answer 1

• User-Defined Function (UDF) in PHP gives a privilege to user to write own specific operation inside of existing program module.
• Two important steps the Programmer has to create for users define Functions are:

Function Declaration

• A user-defined function declaration begins with the keyword “function”.
• User can write any custom logic inside the function block.

Syntax:

function functionName()
{
Custom Logic code to be executed;
}

Function Calling:

• A function declaration part will be executed by a ! call to the function.
• A programmer has to create Function Calling part j inside the respective program.

Syntax:
functionName();

Example:

<?php
function insertMsg() {
echo “Student Details Inserted Successfully!”;
}
insertMsg(); // call the function
?>