PHP Quiz - After Hours Programming

The PHP practice quiz is designed to quiz you knowledge about one of the most common server-side languages in the world. PHP contains many different functions and is always evolving, but this practice quiz will show you how well you know the fundamentals of PHP.

1. Which of the following can PHP NOT do?

It can create custom content based on different variables.

It is excellent at tracking user information.

It can write or read information to databases if partnered with a database language.

It can modify HTML pages after the user loads the page without using JavaScript.

2. Between which tags is PHP code written?

<% %>

<?php ?>

3. Which of the following is NOT a valid comment in PHP?

*/ echo “comment”; /*

// echo “comment”;

/*echo “comment”;*/

# echo “comment”;

4. What is a valid PHP variable name?

/myVar

&myVar

$!myVar

$myVar

5. How do you join strings in PHP?

$myVar3 = “aaaa” + “bbb”;

$myVar3 = “aaaa” . “bbb”;

$myVar3 = “aaaa” join “bbb”

$myVar3 = join(“aaaa”,”bbb”);

6. Which of the NOT a valid assignment operator in PHP?

$b <= $b;

$b *= $b;

$b += $b;

$b -= $b;

7. What is the difference between an include and a require in PHP?

Include only includes the HTML in the file, while require includes the PHP code too.

Require only includes the HTML in the file, while include imports the HTML and PHP code.

Require will stop executing as soon as an error is reached, and include will continue executing the code after the error.

Include will stop executing as soon as an error is reached, and require will continue executing the code after the error.

8. What keyword(s) can you use to add an alternative condition to an if statement that executes different code?

else if

and if

elif

or if

9. Which of the following is NOT a valid if statement?

if($x === “7”) { }

if($x != 8) { }

if($x NEQ 8) { }

if(!$x) { }

10. Which of the following is the valid way to start a function in PHP?

function testFunc()

function testFunc{}

function testFunc[]

def testFunc{}

11. Which of the following keywords is used to start a conditional in a PHP switch statement?

case

cond

condition

12. Which of the following is a valid way to start a for loop in PHP that would print out the numbers 0 through 4?

for($i < 5; $i = 0;)

for($i = 0; $i < 5; $i++)

for($i < 5;)

for( $i < 5; $i = 0; $i++)

13. How do you create an array in PHP?

$myArray = new array();

$myArray = Array.create();

$myArray = array();

$myArray = create(array);

14. What keyword can you use to exit out of a loop and continue onto the next code after the loop?

exit();

continue

break

skip

15. Which of the following variables can NOT be used to obtain the form data after a form is submitted?

$_FORMDATA

$_REQUEST

$_GET

$_POST

16. What function can you use to get the position of a string or character inside a string?

string_position()

strrpos()

len()

length()

17. What function can you use to break a string with a sentence into an array of words?

splice()

array_split()

break()

explode()

18. How would you open a file to read from it in PHP?

$myFile = fopen(“r”, “sampleFile.txt”);

$myFile = fopen(“sampleFile.txt”, “r”);

$myFile = open(“sampleFile.txt”, “r”);

$myFile = open(“r”, “sampleFile.txt”);

19. How would you read the first 20 characters of a file if the variable $a contains the link to the file?

$myFileContents = fread($a, 20);

$myFileContents = fread(20,$a);

$myFileContents = read(20,$a);

$myFileContents = read($a, 20);

20. How do you write contents to a file?

output (“some content”);

echo (“some content”);

write(“some content”);

fwrite(“some content”);

21. What function do you use to delete a file in PHP?

delete()

fdelete()

unlink()

remove()

22. What function can you use to transfer an uploaded file to a new location?

transfer()

move_uploaded_file()

move_file()

transfer_file()

23. How how do you connect to a MySQL database using PHP’s PDO class?

$dbCon = new PDO(“mysql:host=”.$host.”;dbname=”.$dbName, $username, $password);

$dbCon = PDO(“host=”.$host.”;dbname=”.$dbName, $username, $password);

$dbCon = PDO(“mysql:host=”.$host.”;dbname=”.$dbName, $username, $password);

$dbCon = new PDO(“host=”.$host.”;dbname=”.$dbName, $username, $password);

24. What function do you use to get your PDO object ready to run a query?

prep()

prepare()

ready()

establish()

25. What function do you use to run a query using a PDO object?

run()

start_query()

query()

execute()

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