Program for function

 Sure, here's a more detailed example of a PHP program that demonstrates some of the basic syntax and concepts:

php
<?php

// Declare a variable and assign it a value
$myVariable = "Hello, World!";

// Output the value of the variable
echo $myVariable;

// Define a function
function myFunction($arg1, $arg2) {
  // Function code goes here
  return $arg1 + $arg2;
}

// Call the function and output the result
$result = myFunction(2, 3);
echo $result;

?>

In this example, we start by declaring a variable $myVariable and assigning it the value "Hello, World!". We then output the value of the variable using the echo statement.

Next, we define a function called myFunction that takes two arguments $arg1 and $arg2. The function code is not shown in this example, but it would go between the curly braces {}. In this case, the function simply adds the two arguments together and returns the result.

Finally, we call the myFunction function with the arguments 2 and 3, store the result in a variable $result, and output the value of the variable using echo. When this program is run, it will output:

Hello, World!
5

which is the value of $myVariable followed by the result of calling myFunction(2, 3).