Module 2: PHP & JS

Question 1

How many times does this loop iterate?
$a = 0;
$b = 1.0;
for ($i = 0; $i < 10; $i++) {
$a += 0.1;
}
echo (($a === $b) ? “yes” : “no”);

Answer 1

10

Question 2

What is the expected output?
$a = 0;
$b = 1.0;
for ($i = 0; $i < 10; $i++) {
$a += 0.1;
}
echo (($a === $b) ? “yes” : “no”);

Answer 2

No

Question 3

How many times does this loop iterate?
$a = 0;
$b = 1.0;
for ($i = 0; $i < 10; $i++) {
$a += 0.1;
}
echo ((round($a) === $b) ? “yes” : “no”);

Answer 3

10

Question 4

What is the expected output?
$a = 0;
$b = 1.0;
for ($i = 0; $i < 10; $i++) {
$a += 0.1;
}
echo ((round($a) === $b) ? “yes” : “no”);

Answer 4

Yes

Question 5

What is the tag for PHP?

Answer 5

<?php ?>

Question 6

What is the tag for JavaScript?

Answer 6

“

”

Question 7

Where does PHP run?

Answer 7

Server-side

Question 8

Where does JavaScript run?

Answer 8

Client-side

Question 9

var

Answer 9

Function scope (less strict)

Question 10

let

Answer 10

Block scope (more restrictive)

Question 11

const

Answer 11

Block scope (also can’t be changed once set)