PHP Midterm Exam Questions and Answers

PHP Midterm Exam Questions and
Answers


Select the answer that is NOT a PHP data type.



Undefined

Array

Float

NULL - Answer-Undefined



Which statement is often used to display output in PHP?



printScreen

screenPrint

echo

display - Answer-echo



If you need to know the data type and value of a PHP variable, you should use the _______________
function.



var_dump

toString

,typeof

type_of - Answer-var_dump



When you create PHP constant values, you can indicate if the constant is case-sensitive.



True

False - Answer-True



PHP is currently utilized in a majority of websites.



True

False - Answer-True



To generate a random number in PHP, you should use the __________ function.



serialize

rand

random

randNum - Answer-rand



PHP variable names start with which symbol?



!

$

&

,# - Answer-$



PHP code is executed in the browser.



True

False - Answer-False



PHP variable names are case-sensitive.



True

False - Answer-True



Like JavaScript, you can concatenate PHP strings with the + operator



True

False - Answer-False



function addCoffee(&$word) { $word = $word . "coffee"; }

$myWord = "Good";

addCoffee($myWord);

echo $myWord;



What will the output be?



Good coffee

, Good

Error! There's an ampersand in the parameter.

Goodcoffee - Answer-Goodcoffee



$x = 5; $y = 10;

Select the if statement that will output "Hello!" when $x is equal to 5 or when $y is equal to 10, but will
not create output if both are true.

if ($x === 5 Or $y === 10) { echo "Hello!"; }

if ($x === 5 xor $y === 10) { echo "Hello!"; }

if ($x === 5 || $y === 10) { echo "Hello!"; }

if ($x === 5 && $y === 10) { echo "Hello!"; } - Answer-if ($x === 5 xor $y === 10) { echo "Hello!"; }



When constructing a Switch statement, every case should end with a _________________ until you
reach the default code to be executed.



conditional

exception

break

continue - Answer-break



By default, PHP is a strictly typed language.



True

False - Answer-False



I am concerned that my PHP form may be easily hacked with XSS. I am going to use the
htmlspecialchars() function to prevent this. What does htmlspecialchars() do?