Computer Ch 1 Test: Comprehension Check

You create line comments in PHP code by adding the _________ to a line you want to use as a comment.

# or //

Which of the following refers to the first element in an indexed array named $Employees[ ]? - $Employees[0] - $Employees[1] - $Employees[first] - $Employees[a]

$Employees[0]

Which is the correct syntax for declaring a variable and assigning it to a string? - $MyVariable = "Hello"; - $MyVariable = "Hello" - "Hello" = $MyVariable; - $MyVariable = Hello;

$MyVariable = "Hello";

Which of the following is a valid variable name? - SalesOrder - salesOrder - $SalesOrder - $1SalesOrder

$SalesOrder

Block comments begin with /* and end with ________

*/

What is the default extension that most Web servers use to process PHP scripts?

.php

What is the value of the expression 4 * (2+3)?

20

Explain the concept of data types.

A data type is the specific category of information that a variable contains.

Which of the following values can be assigned to a Boolean variable? (Choose all that apply.) - TRUE - FALSE - 1 - YES

Don't worry about this.

What value is assigned to the $ReturnValue variable in the statement $ReturnValue = !$x; assuming that $x has a value of TRUE?

False

You are not required to initialize a variable when you first declare it in PHP. True or False?

False

What do use to separate multiple arguments that are passed to a function?

a comma (,)

The modulus operator (%) _________. - converts an operand to base 16 (hexadecimal) format - returns the absolute value of an operand - calculates the percentage of one operand compared to another - divides two operands and returns the remainder

divides two operates and returns the remainder

A loosely typed programming language ________. - does not require data types of variables to be declared - requires data types of variables to be declared - does not have different data types - does not have variables

does not require data types to be declared

The order of priority in which operations in an expression are evaluated is known as _______________.

operator precedence

The logical And (&&) operator returns TRUE if _______________.

the left and right operands both return a value of True

How many decimal places does an integer store?

zero