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48 interview questions on PHP - Fundamentalsfor developers (2025)

Test your technical skills before an interview of PHP - Fundamentals with 48 corrected questions. Beginner, Intermediate or Expert level.

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48 questions
Hard
10 votes2575 runs0 comment
Medium
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Hard
8 votes2617 runs
3 comments

What type of array is the following?

Back-end developer
arrays
multidimensional
bidimensional
Théoat Mar 28, 2022
Easy
8 votes2535 runs
6 comments
Medium
6 votes2552 runs0 comment
Hard
6 votes2476 runs
1 comment
Hard
6 votes2395 runs
1 comment
Easy
5 votes2241 runs0 comment
Medium
5 votes1804 runs0 comment
Medium
4 votes2254 runs0 comment
Medium
4 votes1728 runs0 comment
Medium
4 votes1011 runs2 comments

Usage of the null coalescing operator in PHP

Back-end developer
ternary operator
null coalescing operator
Théoat Mar 28, 2022
Medium
3 votes2378 runs0 comment
Medium
3 votes2294 runs0 comment
Easy
2 votes2211 runs1 comment
Easy
2 votes1544 runs0 comment

Pass by reference in PHP

Back-end developer
functions
references
Théoat Mar 28, 2022
Hard
2 votes1426 runs0 comment