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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 votes2428 runs0 comment
Medium
8 votes2390 runs
6 comments
Medium
7 votes2508 runs0 comment
Hard
7 votes2468 runs
3 comments

What type of array is the following?

Back-end developer
arrays
multidimensional
bidimensional
Théoat Mar 28, 2022
Hard
5 votes2407 runs0 comment
Hard
5 votes2336 runs
1 comment
Hard
5 votes2264 runs
1 comment
Easy
5 votes2124 runs0 comment
Medium
5 votes1680 runs0 comment
Medium
4 votes2127 runs0 comment
Medium
4 votes1672 runs0 comment
Medium
4 votes982 runs2 comments

Usage of the null coalescing operator in PHP

Back-end developer
ternary operator
null coalescing operator
Théoat Mar 28, 2022
Medium
3 votes2247 runs0 comment
Medium
3 votes2173 runs0 comment
Easy
2 votes2096 runs1 comment
Easy
2 votes1503 runs0 comment

Pass by reference in PHP

Back-end developer
functions
references
Théoat Mar 28, 2022
Hard
2 votes1382 runs0 comment