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Study guide
PHP quiz questions and answers
Review all 5 questions at your own pace. Open each answer to see the correct response and a concise explanation of the concept.
1What is PHP most commonly used for?
Correct answer
Server-side web development
PHP runs on the server and is often used to generate dynamic HTML and APIs.
2Which PHP superglobal contains query string parameters?
Correct answer
$_GET
$_GET contains URL query parameters sent with the request.
3What is the safest way to avoid SQL injection in PHP?
Correct answer
Prepared statements
Prepared statements separate SQL structure from user-provided values.
4Which tool is commonly used for PHP dependency management?
Correct answer
Composer
Composer installs and autoloads PHP packages.
5What should you do before displaying user-generated content?
Correct answer
Escape output
Escaping output helps prevent cross-site scripting attacks.