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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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Hard
10 votes2588 runs0 comment
Hard
9 votes2632 runs
3 comments

What type of array is the following?

Back-end developer
arrays
multidimensional
bidimensional
Théoat Mar 28, 2022
Easy
9 votes2546 runs
6 comments
Medium
8 votes2673 runs0 comment
Medium
6 votes2563 runs0 comment
Hard
6 votes2489 runs
1 comment
Hard
6 votes2407 runs
1 comment
Medium
6 votes1815 runs0 comment
Easy
5 votes2252 runs0 comment
Medium
4 votes2304 runs0 comment
Medium
4 votes2265 runs0 comment
Medium
4 votes1737 runs0 comment
Medium
4 votes1019 runs2 comments

Usage of the null coalescing operator in PHP

Back-end developer
ternary operator
null coalescing operator
Théoat Mar 28, 2022
Medium
3 votes2388 runs0 comment
Medium
3 votes1434 runs0 comment
Easy
2 votes2225 runs1 comment
Easy
2 votes1551 runs0 comment

Pass by reference in PHP

Back-end developer
functions
references
Théoat Mar 28, 2022