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40 interview questions on PHP8for developers (2025)

Test your technical skills before an interview of PHP8 with 40 corrected questions. Beginner, Intermediate or Expert level.

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40 questions
Hard
7 votes1343 runs
6 comments

PHP code that throws an error.

Anonymous authorat Jan 4, 2022
Medium
5 votes1148 runs
1 comment

Check if a value is in an array in PHP

Back-end developer
arrays
strings
Anonymous authorat Jan 4, 2022
Easy
5 votes1141 runs0 comment
Medium
5 votes1137 runs2 comments

PHP function with named and positional arguments.

Back-end developer
php
arrays
functions
Anonymous authorat Aug 26, 2024
Medium
4 votes1243 runs2 comments
Medium
4 votes1226 runs2 comments
Easy
4 votes1130 runs0 comment
Hard
3 votes1292 runs
5 comments

PHP code that throws a TypeError

Back-end developer
null
type-hinting
Anonymous authorat Mar 14, 2023
Easy
3 votes1085 runs0 comment
Hard
3 votes958 runs
3 comments

Write to a nullsafe property in PHP

Back-end developer
nullsafe operator
php
Anonymous authorat Oct 6, 2023
Medium
2 votes1112 runs2 comments

Is this PHP code valid?

Back-end developer
constructor
parameters
Anonymous authorat Jan 4, 2022
Easy
2 votes1087 runs0 comment
Easy
2 votes1082 runs1 comment

What are WeakMap data structures?

Back-end developer
arrays
objects
Anonymous authorat Feb 6, 2024
Easy
2 votes1081 runs0 comment
Medium
2 votes153 runs1 comment
Medium
1 vote1017 runs1 comment
Easy
1 vote725 runs0 comment

Print the class name of a PHP object

Back-end developer
classes
objects
Anonymous authorat Jan 4, 2022