101. Which PHPUnit annotation marks a test method?
- a) @test
- b) @phpunit
- c) @testMethod
- d) Method name starting with "test"
Answer: D - Either prefix method name with "test" or use @test annotation.
102. What is the purpose of PHP 8's named arguments?
- a) Pass arguments by parameter name instead of position
- b) Name anonymous functions
- c) Document function parameters
- d) Create named parameter arrays
Answer: A - Named arguments allow
function(foo: 'bar') syntax, improving readability.
103. Which PHP 8 feature replaces switch statements with more readable syntax?
- a) match() expression
- b) switch() enhancement
- c) case/when blocks
- d) pattern matching
Answer: A -
match is stricter (returns value, no fallthrough) than switch.
104. How do you test private methods in PHPUnit?
- a) Use Reflection to make them accessible
- b) Test through public methods
- c) Mark them @testable
- d) Both A and B
Answer: D - Best practice is testing via public API, but Reflection can access privates when needed.
105. Which PHP 8.1 feature enables read-only properties?
- a) readonly keyword
- b) const properties
- c) final properties
- d) immutable classes
Answer: A -
readonly properties can only be set once during initialization.
106. What is the purpose of PHP's async/await in frameworks like Swoole?
- a) Non-blocking I/O operations
- b) Parallel execution
- c) Both A and B
- d) Synchronous task queuing
Answer: C - Async PHP enables concurrent I/O and parallel processing.
107. Which PHP 8.0 feature ensures strict parameter type checking?
- a) Union types
- b) Strict mode
- c) declare(strict_types=1)
- d) Type assertions
Answer: C -
declare(strict_types=1) enforces exact type matching in the file.
108. What is the purpose of PHP's fiber in 8.1+?
- a) Lightweight cooperative multitasking
- b) Database connection pooling
- c) Parallel thread execution
- d) CPU-intensive task scheduling
Answer: A - Fibers enable suspendable/resumable functions without full threading.
109. Which PHPUnit method asserts two variables are equal?
- a) assertEquals()
- b) assertSame()
- c) assertEqual()
- d) Both A and B
Answer: D - assertEquals() (loose) and assertSame() (strict) compare values.
110. What is the purpose of PHP 8's nullsafe operator (?->)?
- a) Prevents null reference errors
- b) Checks for null values
- c) Both A and B
- d) Throws NullPointerException
Answer: A -
$obj?->method() safely returns null if $obj is null.
111. Which PHP 8.2 feature prevents dynamic property creation?
- a) #[AllowDynamicProperties] attribute
- b) readonly classes
- c) declare(strict_properties=1)
- d) final classes
Answer: A - Classes now forbid dynamic properties unless marked with this attribute.
112. How do you mock objects in PHPUnit?
- a) createMock() method
- b) MockBuilder class
- c) @mock annotation
- d) Both A and B
Answer: D - Both createMock() (simple) and MockBuilder (advanced) create test doubles.
113. Which PHP 8.0 attribute marks deprecated functionality?
- a) #[Deprecated]
- b) @deprecated
- c) #[Deprecation]
- d) #[Deprecate]
Answer: A - #[Deprecated] replaces PHPDoc's @deprecated in PHP 8+.
114. What is the purpose of PHP's WeakMap in 8.0+?
- a) Holds weak references to objects
- b) Memory-efficient array alternative
- c) Thread-safe mapping
- d) Immutable key-value storage
Answer: A - WeakMap doesn't prevent garbage collection of its keys (unlike SplObjectStorage).
115. Which PHPUnit annotation provides test data?
- a) @dataProvider
- b) @testWith
- c) @dataset
- d) Both A and B
Answer: D - @dataProvider references a method, @testWith provides inline data.
116. What is the purpose of PHP 8.1's enums?
- a) Type-safe named constants
- b) Alternative to classes
- c) Database enum replication
- d) Bitmask operations
Answer: A - Enums provide first-class, type-checked constant values with methods.
117. Which PHP 8.2 feature improves type system flexibility?
- a) Disjunctive Normal Form (DNF) types
- b) Dynamic typing
- c) Type erasure
- d) Generic types
Answer: A - DNF allows combining union/intersection types (e.g., (A&B)|C).
118. How do you test exceptions in PHPUnit?
- a) expectException() method
- b) @expectedException annotation
- c) try/catch in test
- d) Both A and B
Answer: D - Modern PHPUnit uses expectException(), but annotations still work.
119. Which PHP 8.0 constructor feature reduces boilerplate?
- a) Constructor Property Promotion
- b) Named constructors
- c) Auto-injection
- d) Constructor overloading
Answer: A - Combines property declaration and assignment in constructor parameters.
120. What is the purpose of PHP's #[SensitiveParameter] attribute?
- a) Redacts sensitive data in stack traces
- b) Encrypts parameter values
- c) Validates input sanitization
- d) Marks PII for GDPR compliance
Answer: A - Hides values (like passwords) in error logs (PHP 8.2+).