PHP classes, traits, namespaces, interfaces, type declarations, enums, composer and PSR standards.
40 cards · basic cards · AI-written, checked twice. Edit anything.
- What keyword is used to define a class in PHP?
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class- What visibility modifier restricts access to only within the same class?
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private- What visibility modifier allows access within the class and its subclasses?
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protected- What visibility modifier allows access from anywhere?
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public- What special method is automatically called when a new object is created?
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__construct- What keyword is used to inherit from a parent class?
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extends- Can a class extend multiple classes in PHP?
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No, PHP only supports single inheritance- What is an abstract class?
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A class that cannot be instantiated and is designed to be inherited- Can abstract classes contain non-abstract (concrete) methods?
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Yes, abstract classes can mix abstract and concrete methods- What keyword prevents a class from being extended?
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final- What does the final keyword do when applied to a method?
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Prevents the method from being overridden in subclasses- What is a trait in PHP?
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A mechanism for reusing methods in multiple, unrelated classes- How many traits can a single class use?
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Multiple traits- What keyword includes a trait within a class body?
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use- What keyword resolves conflicts when two traits define the same method?
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insteadof
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