What will this code display?

Select one:

a. 1

b. 3

c. Warning or no value

d. An error

Question 18

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What will be printed?

$var = true; if ($var) { echo 'true'; } else { echo 'false'; }

Select one:

a. false

b. error

c. warning

d. true

Question 19

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What will be the value of $var?

$var = 1 / 2;

Select one:

a. 0

b. 0.5

c. 1

d. 2

Question 20

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How do you join strings in PHP?

Select one:

a. $m = aa + bb;

b. $m = aa join bb;

c. $m = aa.bb;

d. $m = join(aa,bb);