Midterm Study 2

Question 1

What is the code to match any character?

Answer 1

.

Question 2

What is the code to match any alphanumeric character?

Answer 2

\w

Question 3

What is the code to match any non-alphanumeric character?

Answer 3

\W

Question 4

What is the code to match any whitespace character?

Answer 4

\s

Question 5

What is the code to match any non-whitespace character?

Answer 5

\S

Question 6

What is the code to match any digit character?

Answer 6

\d

Question 7

What is the code to match any non-digit characteR?

Answer 7

\D

Question 8

What is the code to match a, b, or c?

Answer 8

[abc]

Question 9

What is the code to match a to g?

Answer 9

[a-g]

Question 10

What is the code to match 6, 7, a to g?

Answer 10

[67a-g]

Question 11

What is the code to match any character but a, b, or c?

Answer 11

[^abc]

Question 12

What is the code to match any capital letter?

Answer 12

[A-Z]

Question 13

What is the code to escape the next characteR?

Answer 13

\

Question 14

What is the code to anchor at the beginning?

Answer 14

/^abc/

Question 15

What is the code to anchor at the end?

Answer 15

/acb$/

Question 16

What is the code to anchor both beginning and end?

Answer 16

/^abc$/

Question 17

What is the code to check for zero or one occurrence?

Answer 17

?

Question 18

What is the code to check for zero or more occurrences?

Answer 18

*

Question 19

What is the code to check for one or more occurrences?

Answer 19

+

Question 20

What is the code to check for m occurrences

Answer 20

{m}

Question 21

What is the code to check between m and n occurrences?

Answer 21

{m,n}

Question 22

How to group characters together for repetition?

Answer 22

()

Question 23

what is the code for the OR operator?

Answer 23

|

Question 24

How do you filter input for integer?

Answer 24

$_GET[“NUMBER”] FILTER_INPUT(INPUT_GET, “NUMBER”, FILTER_VALIDATE_INT)

Question 25

How would a good sanitation if else statement look?

Answer 25

Question 26

What are some of the other filter validation functions that can be used?

Answer 26

FILTER_VALIDATE_INT

FILTER_VALIDATE_FLOAT

FILTER_VALIDATE_BOOLEAN

FILTER_VALIDATE_EMAIL

FILTER_VALIDATE_URL

Question 27

What is the difference between the VALIDATE and SANITIZE functions?

Answer 27

Sanitize removes or replaces bad or incorrect characters and return the resulting string instead of just true and false testing

Question 28

How do you properly sanitize a string for special characters?

Answer 28

$safeString = filter_input(INPUT_GET, “param”,

FILTER_SANITIZE_SPECIAL_CHARS);

if ($safeString === null)

echo “

no parameter

”;

else

echo “

$safeString

”;

Question 29

How would you remove HTML tags entirely from the input?

Answer 29

FILTER_SANITIZE_STRING

Question 30

How do you process a string raw?

Answer 30

$x = “hi there”;

for ($i=0; $i<strlen></strlen>

<p>echo "$i: {$x[$i]}<br></br>";</p>

<p>}</p>

</strlen>

Question 31

How do you do regular expression matching?

Answer 31