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56 interview questions on PHP7for developers (2026)

Test your technical skills before an interview of PHP7 with 56 corrected questions. Beginner, Intermediate or Expert level.

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56 questions
Hard
4 votes1241 runs1 comment

What will this code display?

Back-end developer
php
null
empty
Julien Breuxat Dec 3, 2021
Hard
4 votes1200 runs
1 comment

Which of these PHP code snippets are valid?

Back-end developer
php
namespace
Julien Breuxat Dec 16, 2021
Hard
3 votes1242 runs0 comment

Which of the following statements are correct?

Back-end developer
interfaces
classes
Julien Breuxat Dec 3, 2021
Medium
3 votes1214 runs0 comment

Display the first element of an array in PHP

Back-end developer
arrays
associative arrays
Julien Breuxat Dec 2, 2021
Hard
3 votes1211 runs1 comment

Which of the following are PHP framework names?

Back-end developer
framework
php
Julien Breuxat Dec 1, 2021
Hard
2 votes1218 runs0 comment

What will this code display?

Back-end developer
comparison
boolean
Julien Breuxat Dec 16, 2021
Medium
2 votes1216 runs0 comment

What is the PSR4 used for?

Back-end developer
autoloading
psr4
Julien Breuxat Dec 3, 2021
Medium
2 votes1193 runs3 comments

Write a PHP code that displays the full name of a person.

Back-end developer
ternary operator
strings
Julien Breuxat Dec 16, 2021
Expert
1 vote1250 runs1 comment

List the reserved keywords in PHP

Back-end developer
keywords
Julien Breuxat Dec 3, 2021
Easy
1 vote1203 runs0 comment

What does PSR mean?

Back-end developer
standards
Julien Breuxat Dec 3, 2021
Medium
1 vote1201 runs0 comment

Write a PHP code that prints 1, 2, 3, 4

Back-end developer
functions
yield
Julien Breuxat Dec 1, 2021
Medium
1 vote1190 runs1 comment

Write a function that checks if a string contains a substring.

Back-end developer
functions
strings
Julien Breuxat Dec 16, 2021
Easy
1 vote1189 runs0 comment

Why is the Singleton design pattern considered an anti-pattern?

Back-end developer
design patterns
singleton
Julien Breuxat Dec 1, 2021
Easy
1 vote1182 runs0 comment

What is Composer?

Back-end developer
dependency management
Julien Breuxat Dec 3, 2021
Hard
1 vote295 runs0 comment

Explain the advantages of using classes in PHP.

Back-end developer
classes
object oriented programming
Yves Astierat Dec 1, 2021
Hard
1 vote140 runs0 comment

How to destroy a cookie in PHP

Back-end developer
cookies
setcookie
Yves Astierat Nov 16, 2021
Hard
1 vote110 runs0 comment

Which of the following statements are correct?

Back-end developer
interfaces
classes
Yves Astierat Nov 29, 2021
Medium
1 vote106 runs0 comment

PHP: What are the correct statements? An abstract class cannot be instantiated, A class can only derive from one and only one class

Back-end developer
classes
inheritance
Yves Astierat Nov 21, 2021
Hard
0 vote1234 runs1 comment

Write a PHP function that takes an arbitrary number of integers as arguments and returns their sum.

Back-end developer
functions
arrays
Julien Breuxat Dec 3, 2021
Medium
0 vote1213 runs0 comment

Which design pattern would allow me to easily instantiate an object knowing only its interface?

Back-end developer
design pattern
factory
Julien Breuxat Dec 2, 2021