What is the value of $m after this runs?

$x = 0; $m = $x++;

		0
		1
		2

2 points

QUESTION 2

true || false = false

True

False

2 points

QUESTION 3

What's the output of this code segment?

$cost = 102; if ($cost > 0 and $cost < 100) echo "too much"; if ($cost <= 0 or $cost >= 100) echo "OK";

		too much
		OK
		too much OK
		OK too much

2 points

QUESTION 4

What is the output for y?

$y = 0;

for($i=0; $i < 8; $i += 2) $y += $i;

echo($y);

		10
		12
		20
		9

2 points

QUESTION 5

What does this code do?

$pi = 3.14; $m = strval($pi);

		assigns $m the Boolean value true
		assigns $m the value 3"
		assigns $m the Boolean value false
		assigns $m value "3.14"

2 points

QUESTION 6

A compound data type is a data type that _____.

		none of the above
		can hold more than one value
		can only be used in a function
		can be used anywhere in the program except a function

2 points

QUESTION 7

The value property of an HTML text box is whatever the user types in that text box.

True

False

2 points

QUESTION 8

&& is evaluated before ||.

True

False

2 points

QUESTION 9

Which of the following expressions evaluates as true for $n less than 0 or more than 100 (exclusive)?

		if ($n > 100 or $n < 0)
		if ($n <= 100 or $n >= 0)
		if ($n < 100 and $n > 0)
		if ($n < 100 and $n > 0)

2 points

QUESTION 10

"With switch blocks, if you don't include a break statement then execution continues within in the switch block until the next break statement or the end of the block."

True

False

2 points

QUESTION 11

What should you say about this code?

$sum = 0;

for($d = 0; $d < 4; $d = $d + 0.5) $sum += 1;

		sum = 9
		sum = 5
		it is not a good idea to use
		sum = 4

2 points

QUESTION 12

What does this code do?

$x = 4; echo is_float($x);

		"sends ""integer"" to the user's browser"
		sends the Boolean value true to the user's browser
		"sends ""float"" to the user's browser"
		sends the Boolean value false to the user's browser

2 points

QUESTION 13

The first character after the dollar sign in a variable name must be _____ or _____. Choose 2 answers.

		an underscore
		another dollar sign
		a letter of the alphabet

2 points

QUESTION 14

"if used in an assignment, $m++ adds 1 to $m then returns the result."

True

False

2 points

QUESTION 15

"How many times will the following code echo "PHP"?

$count = 2; while($count < 10) { echo "PHP "; $count += 1; }

		10
		11
		9
		8

2 points

QUESTION 16

"If two conditions are ANDed together, and the first condition is false, the second condition is not even tested."

True

False

2 points

QUESTION 17

"In the following, because there is only a single line associated with the if-statement, you don't need to enclose the echo statement in curly braces, but it is considered to be a good thing to do anyway. if($x != 0) echo ""Not a zero."";"

True

False

2 points

QUESTION 18

"How many times will the following code echo "Welcome to PHP"?

$count = 0;

while ($count < 10) echo "Welcome to PHP";

		an infinite number of times
		9
		11
		8

2 points

QUESTION 19

Both the print and the echo command send http to the users browser.

True

False

2 points

QUESTION 20

What does this code do?

define("tax", .06);

		"normally it defines a constant, but only if the variable name begins with a $"
		it defines a named constant called tax
		it initialized the variable 'tax'
		it allows the use of .06 in a program

2 points

QUESTION 21

What is the value of $m after this runs?

$x = 0; $m = ++$x;

		1
		2
		0

2 points

QUESTION 22

With a switch statement the structure is set up to compare the variable value or expression in the parentheses of switch(expr) to a case label. If there is a match the code for that case is executed.

True

False

2 points

QUESTION 23

What does this code do?

$x = 6 / 2.0; echo gettype($x);

		"sends ""3"" to the user's browser"
		"sends ""integer"" to the user's browser"
		"sends ""boolean"" to the user's browser"
		none of the other answers are true

2 points

QUESTION 24

Assume an HTML form is submitted to your page. What is the significance of the word $_POST in this code?

$name = $_POST["full_name"];

		$_POST must be the the name attribute of the HTML form element that was submitted to the PHP page.
		$_POST is used when the method of the HTML form that was submitted as given as post.
		"$_POST is just a place holder, and its actual name can be anything."
		none of the above.

2 points

QUESTION 25

Which of the following are logical operators? Choose all that apply.

		||
		&&
		!
		xor

2 points

QUESTION 26

"What is the output of this code?

$a = 51; if ($a <= 14) echo "apples"; else if ($a > 14 and $a <= 20) echo "oranges"; else if ($a > 20 or $a < 30) echo "grapes"; else if ($a >= 30 and $a <= 50) echo "peaches"; else echo "bananas";

		grapes
		apples
		peaches
		oranges

2 points

QUESTION 27

What is the output of the following code?

$x = 10; while ($x < 5) $x = $x + 1; echo $x

		16
		0
		14
		10

2 points

QUESTION 28

The _____ attribute of a HTML form determines whether the GET or the POST request is used.

		action
		size
		method
		name

2 points

QUESTION 29

Which of the following is equivalent to 44 >= $r >= 12?

		if ($r >= 12 or $r <= 44)
		if ($r <= 44 and $r <= 12)
		if ($r <= 44 and $r >= 12)
		if ($r >= 12 or $r >= 44)

2 points

QUESTION 30

How many times is the echo statement executed?

for($i=0; $i < 3; $i++) for($j=0; $j < 4; $j++) echo "PHP ";

		100
		10
		7
		12

2 points

QUESTION 31

Assume $r= 6 and $s= 0. Which of the following evaluate to true? Choose all correct answers.

		$r || $s == 1
		not $r || $s == 1
		$r && $s == 0

2 points

QUESTION 32

What is the output for $y?

$y = 0; for($i=1; $i < 7; $i++) $y += $i; echo $y;

		10
		15
		21
		11

2 points

QUESTION 33

"What does this code do?

$x = 8; $z= settype($x, "float");

		assigns $z the Boolean value false
		assigns $z the value 8
		assigns $z the value 8.0
		assigns $z the Boolean value true

2 points

QUESTION 34

"if used in an assignment, ++$m adds 1 to $m then returns the result."

True

False

2 points

QUESTION 35

What will be displayed when the following code is executed?

$number = 6;

while ($number > 0) { $number -= 3; echo "$number "; }

		6 3
		3 0 -3
		6 3 0
		3 0

2 points

QUESTION 36

"In a page containing both PHP and HTML, the PHP code does not need to be distinguished from HTML code."

True

False

2 points

QUESTION 37

Any arithmetic operations written in parenthesis will happen before multiplication

True

False

2 points

QUESTION 38

What is the output?

$answer = 2; switch($answer) { case 1: echo "4.50"; break; case 2: echo "7.00"; break; case 3: echo "9.25"; break; default: echo "3.10"; }

		3.10
		7.00
		4.5
		7

2 points

QUESTION 39

With a switch statement the structure is set up to compare the variable value or expression in the parentheses of switch(expr) to a case label. If there is a match the code for that case is executed.

True

False

2 points

QUESTION 40

____ is an advantage of loosely-typed languages.

		errors involving data types are easy to track down.
		they allow variables to be used anywhere in the program except a function.
		it makes things more flexible.

2 points

QUESTION 41

Assume a HTML form is submitted to your page. What is the significance of the word full_name in this code?

$name = $_POST["full_name"];

		full_name should start with a dollar sign.
		full_name must be the the name attribute of the HTML form element that was submitted to the PHP page.
		"full_name is just a place holder, and its actual name can be anything."
		full_name is a reserved word and cannot be used as a variable name.

2 points

QUESTION 42

"If two conditions are ORed together, and the first condition is false, the second condition is not even tested."

True

False

2 points

QUESTION 43

The _____ attribute gives the path to the page on the web server that will process form data submitted by the user.

		name
		size
		action
		method

2 points

QUESTION 44

"If two conditions are ORed together, the result is false even if only one of the conditions are false."

True

False

2 points

QUESTION 45

What is the output for y?

$y = 20;

for($i=10; $i < 5; $i -= 3) $y += $i;

echo($y);

		10
		0
		20
		5

2 points

QUESTION 46

Variable names are _____.

		case sensitive
		case insensitive

2 points

QUESTION 47

What is the output?

$n1 = 3; $n2 = 2; $n3 = 10;

if ($n1 > $n2 && $n1 > $n3) echo $n1; elseif ($n2 > $n1 && $n2 > $n3) echo $n2; elseif ($n3 > $n1 && $n3 > $n2) echo $n3;

		3
		10
		0
		2

2 points

QUESTION 48

The following loop displays ______.

for($i=1; $i < 8; $i++) echo $i+1;

		24681012
		12345678
		1234567
		2345678

2 points

QUESTION 49

What does this code do?

$x = 6; $m = (string) $x;

		it sends the Boolean value false to the user's browser
		it sends the Boolean value true to the user's browser
		this will cause an error
		it assigns $m the value "6"

2 points

QUESTION 50

3 + (4 * 5) = ?