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Backend
PHP
Curated PHP interview questions with detailed answers.
30
questions
updated weekly
Junior
10
Middle
12
Senior
8
PHP questions
24 / 30 shown
Default
Popular
Newest
›
What is PHP and where is it used?
Junior
#Language
#Php
Details →
›
What are PHP's variable types?
Junior
#Language
#Php
Details →
›
How do arrays work in PHP?
Junior
#Data Structures
#Php
Details →
›
How do you define functions with types and defaults?
Junior
#Functions
#Php
Details →
›
How do you work with strings in PHP?
Junior
#Language
#Php
Details →
›
What are PHP superglobals?
Junior
#Language
#Php
Details →
›
What control-flow constructs does PHP have?
Junior
#Language
#Php
Details →
›
How do classes and objects work in PHP?
Junior
#Oop
#Php
Details →
›
What is the difference between include and require?
Junior
#Language
#Php
Details →
›
What are the error/exception types in PHP?
Junior
#Error Handling
#Php
Details →
›
How do inheritance, abstract classes and interfaces work?
Middle
#Oop
#Php
Details →
›
What are traits and when do you use them?
Middle
#Oop
#Php
Details →
›
How do namespaces work in PHP?
Middle
#Language
#Php
Details →
›
What is Composer and how does autoloading work?
Middle
#Tooling
#Php
Details →
›
How do type declarations and strict types work?
Middle
#Language
#Php
Details →
›
How do you handle exceptions properly?
Middle
#Error Handling
#Php
Details →
›
What are PHP magic methods?
Middle
#Oop
#Php
Details →
›
How do sessions and cookies work in PHP?
Middle
#Security
#Php
Details →
›
How does dependency injection work in modern PHP?
Senior
#Architecture
#Php
Details →
›
What major features did PHP 8.x add?
Senior
#Language
#Php
Details →
›
What are closures and callables in PHP?
Middle
#Functions
#Php
Details →
›
How do enums work in PHP 8.1+?
Middle
#Oop
#Php
Details →
›
What is late static binding (static:: vs self::)?
Middle
#Oop
#Php
Details →
›
What are PSR standards and why do they matter?
Senior
#Architecture
#Php
Details →
