PHP Function

<?php

/*
 * Function without parameters
 */
//create function
function function_name(){
    echo 'This is a Function<br><hr>';
}
//get the function
function_name();

/*
 * Function with parameters
 */
function function_parm($parm1,$parm2,$parm3){
    echo ($parm1 + $parm2) - $parm3;
}

function_parm(2, 9, 1);
echo '<br><hr>';

/*
 * Function with return value
 */
function function_return($a, $b, $c){
    return ($a + $b) - $c;
}

echo function_return(10, 10, 7);
echo '<br><hr>';

/*
 * Function with array
 */
function func_arr($param) {
    $sum = 0;
    $mul = 1;
    foreach ($param as $new){
        $sum += $new;
        $mul *= $new;
    }
    return array($sum, $mul);
}

$result = func_arr(array(2,4,4));

echo 'Sum is '.$result['0'].'<br>';
echo 'Mul is '.$result['1'];