Beginner ~6 min

PHP Basics

Core PHP understanding for real-world web dev.

Progress: 0/12

Beginner • ~6 min

Q1. What does PHP stand for (originally)?

Select one answer • 1 pt

Personal Home Page Programming Hypertext Processor Private Home Page Preprocessed Hypertext Page

Q2. Which symbol is used to start a variable in PHP?

Select one answer • 1 pt

@ % # $

Q3. Which function outputs text to the browser in PHP?

Select one answer • 1 pt

echo output() write() printf()

Q4. Which superglobal contains data sent by an HTML form using method="POST"?

Select one answer • 1 pt

$_POST $_REQUEST_URI $_SERVER $_GET

Q5. What will strlen("SmartAssess") return?

Select one answer • 1 pt

10 8 11 9

Q6. Which operator is used for concatenation in PHP?

Select one answer • 1 pt

& + :: .

Q7. Which statement properly checks if a key exists in an array?

Select one answer • 1 pt

array_has("a", $arr) in_array("a", $arr) array_key_exists("a", $arr) key_in_array("a", $arr)

Q8. What does isset($x) return when $x is null?

Select one answer • 1 pt

throws an error false true null

Q9. Which function would you use to safely escape output for HTML to prevent XSS?

Select one answer • 1 pt

strip_tags() htmlentities_decode() htmlspecialchars() urldecode()

Q10. In PHP, what does PDO primarily provide?

Select one answer • 1 pt

A database access layer (with prepared statements) A CSS framework A CLI-only routing system A templating engine for HTML

Q11. Which is the correct way to start a PHP session?

Select one answer • 1 pt

start_session(); session_start(); session_begin(); init_session();

Q12. Which superglobal is commonly used for data submitted via POST?

Select one answer • 1 pt

$_SERVER $_POST $_GET $_FILES

Cancel