MIDTERM-QUIZ3

What is the purpose of the return statement in PHP functions?

• Display content on the browser

• Transfer control to another function

• Stop script execution

• Send a value back to the calling code

Which keyword is used to make sure a variable retains its value between function calls?

• global

• return

• static

• local

What is the output of the following code?

function example() {

global $x;

$x = 100;}

$x = 50;

example();

echo $x;

• 50

• 100

• Error

• Nothing

Which of the following uses a static variable correctly?
function example() {

static $x = 0; $x++;

echo $x;}

example(); example();

• 1 1

• 1 2

• 2

• 0 1

What will be printed by this code?
function showResult($x) {

return $x + 10;

}

$result = showResult(5);

echo $result;

• 5

• 10

• 15

• $result

What is the correct way to define a function in PHP?

• function myFunction[] {}

• def myFunction() {}

• function myFunction() {}

• void myFunction()

What happens if you define a function with the same name twice?
function greet() {

echo "Hi!";}

function greet() {

echo "Hello!";}

• Outputs both Hi! and Hello!

• The second function overrides the first

• Error: Cannot redeclare function

• No output

What is the value returned by this function?
function getMax($a, $b) {

if ($a > $b) {

return $a;}

else { return $b; }

} echo getMax(4, 7);

• 4

• 7

• 11

• Error

Which of the following will correctly call a function with one argument?
function displayAge($age) {

echo "Age: $age";

}

• displayAge();

• displayAge(25);

• displayAge["25"];

• call displayAge 25;

What will be the final value of $x?
$x = 10;

function modify(&$var) {

$var = $var * 2; }

modify($x);

echo $x;

• 10

• 20

• 2

• Error