Week 11

Question 1

In the folder structure, where do PHP files go?

Answer 1

o Index goes in the public folder, next to images and stylesheet
o Functions go in the private folder

Question 2

These are used to insert a PHP files contents into the current file before the server executes anything

Answer 2

Include() and require()

Question 3

What is the difference between include and require? Include

Answer 3

Include() generates a warning but the script will continue, require generates a fatal error, stopping the script

Question 4

PHP I/O - file_get_contents(filename)

Answer 4

Contents from a file with made into one large string

Question 5

PHP I/O - file_put_contents(filename, data, mode)

Answer 5

Write to a file in one large string

Question 6

PHP I/O - file_exists(filename

Answer 6

Does the file exist

Question 7

Glob()

Answer 7

Same as Grep. Returns an array of all file names that match a pattern

Question 8

getcwd()

Answer 8

Get current working directory

cwd think pwd

Question 9

How can we break a string into an array of strings in PHP?

Answer 9

Explode()

Question 10

Limited in size by browser, stored on client side, can be disabled

Answer 10

Cookies

Question 11

Stored on server, limited only by server space. No user modifications, expires when browser is closed.

Answer 11

Sessions - Often identified by a session id (a cookie)

Question 12

What needs to be called at the top of every page to start a session?

Answer 12

session_start()

Question 13

JSON stands for

Answer 13

JavaScript Object Notation (

Question 14

o JSON keys are always
o JSON values can be

Answer 14

Strings; Strings, Numbers, Bools, Objects, Arrays

Question 15

• Why use JSON objects?

Answer 15

o Transfer data between the server and the client
Simple to use for data

Question 16

Does JSON have a version?

Answer 16

No

Question 17

T/F - JSON can be unstable if used incorrectly

Answer 17

False

Question 18

What kind of character encoding does JSON use?

Answer 18

Unicode

Question 19

o What data can json_encode be used on?

Answer 19

Any data type except resources (A databse or file handle are resources)

Question 20

By default, what type of object does json_decode return?

Answer 20

a PHP object

Question 21

o Optional param: $assoc—accepts a Boolean value

What happens if its true or false?

Answer 21

 If true the JSON object will decode into an associative array
 If false (default) The JSON object will decode to a PHP object