1.
Which one of the following is the right way of defining a function in PHP?

2.
Type Hinting was introduced in which version of PHP?

3.
What will happen in this function call?
<?php
function calc($price, $tax)	
{
    $total = $price + $tax;
}
$pricetag = 15;
$taxtag = 3;
calc($pricetag, $taxtag);	
?>

4.
What will be the output of the following PHP code?
<?php
function calc($price, $tax="")
{
    $total = $price + ($price * $tax);
    echo "$total"; 
}
calc(42);	
?>

5.
Which of the following are valid function names? 1. function() 2. €() 3. .function() 4. $function()

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