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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
9 votes2427 runs0 comment
Medium
8 votes2389 runs
6 comments
Medium
7 votes2507 runs0 comment
Hard
7 votes2467 runs
3 comments

What type of array is the following?

Back-end developer
arrays
multidimensional
bidimensional
Théoat Mar 28, 2022
Hard
5 votes2406 runs0 comment
Hard
5 votes2335 runs
1 comment
Hard
5 votes2263 runs
1 comment
Easy
5 votes2123 runs0 comment
Medium
5 votes1679 runs0 comment
Medium
4 votes2126 runs0 comment
Medium
4 votes1671 runs0 comment
Medium
4 votes981 runs2 comments

Usage of the null coalescing operator in PHP

Back-end developer
ternary operator
null coalescing operator
Théoat Mar 28, 2022
Medium
3 votes2246 runs0 comment
Medium
3 votes2172 runs0 comment
Easy
2 votes2095 runs1 comment
Easy
2 votes1502 runs0 comment

Pass by reference in PHP

Back-end developer
functions
references
Théoat Mar 28, 2022
Hard
2 votes1381 runs0 comment