A PHP function is just a name we give to a block of code that can be used whenever we need it. This might not look like that big of an idea, but believe me, when you know the use of functions, then definitely you will save a lot of time and effort in writing the code in a program.
function functionname() //defining a function
code to be executed;
functionname(); //calling a function
- In function name cannot be use numeric value, but can use alphabetic letters, underscore and more.
- PHP functions are similar as other languages.
function addfunction($x, $y)
$sum = $x + $y;
echo "Sum of two numbers is : $sum";
Result: Sum of two numbers is :15