PHP

Question 1

When clients request a page containing a server-side script, the ______ processes the scripts, then returns the HTML to the client. For example, a PHP page is not processed by the _______. Instead, it’s interpreted by the ______, that can process PHP scripts and then returns the HTML page to the ______.

Answer 1

server, browser, client

Question 2

What Is The Current Major Version Of PHP?

Answer 2

5.x

Question 3

When PHP runs its code, it runs from top to bottom.

Answer 3

true

Question 4

All statements end with a _________ character.

Answer 4

semicolon

Question 5

The PHP interpreter ignores whitespace.

Answer 5

true

Question 6

How many data types are there in PHP?

Answer 6

7

Question 7

Name the 7 data types in PHP.

Answer 7

Integers, Floats, Strings, Arrays, Booleans, Objects, Resources

Question 8

What built-in internal function outputs the data type?

Answer 8

gettype

Question 9

Most strings in PHP are “x” base index.

Answer 9

0

Question 10

$greeting = "Hello World";
$greeting{0} = "J";
// what is the value of $greeting?

Answer 10

Jello World

Question 11

Anything that is a ___-____ value will always be considered “true”.

Answer 11

non-zero

Question 12

Anything that’s empty in any way is always considered _____.

Answer 12

false

Question 13

A ________ is unchangeable whereas a ________ is varying. _________ are something we may eventually want to modify; a temporary storage location for information in a program.

Answer 13

constant, variable

Question 14

Variables begin with a ______ sign character whereas constants are typically identified by all ____.

Answer 14

dollar, caps

Question 15

A string is a series of characters, where a character is the same as a byte.

Answer 15

true

Question 16

A ________ is an identifier (name) for a simple value. As the name suggests, that value cannot change during the execution of the script. A ________ is ____-_________ by default. By convention, ________ identifiers are always_________.

Answer 16

constant, case-sensitive, uppercase

Question 17

$arr = array(“Apples”, “Oranges”, “Blueberries”);

print_r($arr); // ___ _____ pairs.

Array
(
[0] => Apples
[1] => Oranges
[2] => Blueberries
)

Answer 17

key value

Question 18

$arr = []; // _________ method.

Answer 18

shorthand

Question 19

$arr = array( 12, “green”, 4.65, myFunc(), true ); // _____ data ____ array.

Answer 19

mixed, type

Question 20

$eye_colors[] = ‘hazel’; // what is the result of this statement?

Answer 20

Append key value pair to end of array.

Question 21

$arr = array(“apples”, “oranges”, “bananas”); // what type of array is this?

Answer 21

Indexed / Numeric Array

Question 22

Associate arrays allow us to use a _______ as a key.

Answer 22

string

Question 23

$fav_clr = array(“michel” => “green”); // what type of array is this?

Answer 23

Associative Array

Question 24

Ternary is pronounced “turn-a-ree”.

Answer 24

true

Question 25

Name the 8 most commonly used operator types.

Answer 25

comparison, concatenation, unary, binary, ternary, arithmetic, casting, assignments

Question 26

=== // Strict ________ / __________ operator. Equal in both value and type.

Answer 26

Strict equality / identical operator.

Question 27

&&, ||

Answer 27

Logical operators.

Question 28

There are 4 looping constructs, what are they?

Answer 28

for, foreach, while, do…while

Question 29

By default, PHP uses the “passing by _____” method of passing an argument.

Answer 29

true

Question 30

There how many methods of passing an argument in regards to how the argument value is affected by a function?

Answer 30

2

Question 31

When referring to passing arguments to functions, in which method are the argument values not at all affected by the function outside of that function scope?

Answer 31

“passing by value”

Question 32

Passing arguments by “reference” means the value of an argument if modified by the function scope, will be modified outside the function scope as well. This method of passing arguments is referred to as what?

Answer 32

“passing by reference”

Question 33

The statement $func() is referred to as what in the following code block?

function answer() {
  return 42;
}
$func = 'answer';
$func();

Answer 33

Variable function

Question 34

_________ _________ are functions with no name. These functions are capable of accessing variables outside of the function scope.

Answer 34

Anonymous functions

Question 35

A semicolon is required at the end of this type of function.

Answer 35

Anonymous function

Question 36

echo “Hello $friends.”; // while double quotes ________ variables in a string, single quotes do not.

Answer 36

evaluate

Question 37

In an anonymous functions, to pass through a variable outside the function scope, you use the ___ keyword and pass it the argument variable.

// Example
$name = "Michel";

$greet = function() ___($name) {
return “Hello $name.”;
};

Answer 37

use

Question 38

What keyword or method can we use to pass a value into a closure or anonymous function?

Answer 38

the “use” keyword

Question 39

a ________ is what we can a variable declared inside a class.

Answer 39

property

Question 40

To implement an interface, the __________ operator is used.

Answer 40

implements

Question 41

True or false: The constructor method has to be called __construct().

Answer 41

true

Question 42

___________ is a way for one class to take on the properties or methods of another class.

Answer 42

Inheritance

Question 43

A parent class is also sometimes referred to as a __________ while a child class can be referred to as a ________.

Answer 43

superclass, subclass

Question 44

The ______ keyword lets you use a class ________ or ______ without having to create an instance of that class.

Answer 44

static, property, method

Question 45

An associative array makes use of ___ and _____ pairs.

Answer 45

key => value

Question 46

You can write php in either a __________ (old fashioned) or OOP way.

Answer 46

procedural