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48 interview questions on PHP - Fundamentalsfor developers (2024)

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
Easy
21 votes1375 runs1 comment

Explain the difference between the `include` and `require` functions in PHP.

Back-end developer
functions
errors
Vincent Cotroat Mar 24, 2023
Hard
7 votes1992 runs0 comment

Which of the following statements are true ?

Back-end developer
functions
variables
Théoat Mar 28, 2022
Hard
6 votes2034 runs2 comments

What type of array is the following?

Back-end developer
arrays
multidimensional
bidimensional
Théoat Mar 28, 2022
Medium
5 votes1989 runs3 comments

Which of the following statements are true ?

Back-end developer
php
arrays
Théoat Mar 28, 2022
Medium
5 votes1653 runs0 comment

Write a PHP class with a constant and a public method that outputs the constant.

Back-end developer
constants
classes
Théoat Mar 28, 2022
Medium
4 votes2078 runs0 comment

What is the value of the `PHP_FLOAT_MIN` variable?

Back-end developer
constants
float
Théoat Mar 28, 2022
Hard
3 votes1882 runs0 comment

Usage of the spaceship operator in a PHP loop.

Back-end developer
comparison
operators
Théoat Mar 28, 2022
Medium
3 votes1512 runs0 comment

How to count the number of occurences of a pattern in a string in PHP

Back-end developer
functions
regular expressions
Théoat Mar 28, 2022
Medium
3 votes1323 runs0 comment

What is the `asort()` function for in PHP ?

Back-end developer
arrays
functions
Nick LAM YEE MANat Mar 28, 2023
Hard
2 votes1984 runs0 comment

What are the risks when running the following code ?

Back-end developer
security
xss
Théoat Mar 28, 2022
Hard
2 votes1855 runs0 comment

What is the `is_long()` function for ?

Back-end developer
functions
integers
Théoat Mar 28, 2022
Medium
2 votes1776 runs0 comment

Write a PHP function that adds two numbers and returns an integer.

Back-end developer
functions
types
Théoat Mar 28, 2022
Hard
2 votes1236 runs0 comment

What is the difference between $_GET and $_POST in PHP?

Back-end developer
arrays
php
Théoat Mar 28, 2022
Medium
2 votes855 runs2 comments

Usage of the null coalescing operator in PHP

Back-end developer
ternary operator
null coalescing operator
Théoat Mar 28, 2022
Hard
1 vote1922 runs0 comment

Usage of the global scope in a PHP function.

Back-end developer
functions
variables
Théoat Mar 28, 2022
Medium
1 vote1821 runs0 comment

Use array_map to get the length of each string in an array in PHP

Back-end developer
arrays
functions
Théoat Mar 28, 2022
Medium
1 vote1782 runs0 comment

Using the ternary operator to choose between two strings in PHP.

Back-end developer
ternary operator
strings
Théoat Mar 28, 2022
Easy
1 vote1382 runs0 comment

Pass by reference in PHP

Back-end developer
functions
references
Théoat Mar 28, 2022
Hard
1 vote625 runs0 comment

How to get the value of a key in a JSON object in PHP

Back-end developer
json
php
Théoat Mar 28, 2022
Medium
1 vote450 runs0 comment

What can we say about the following code?

Back-end developer
nicolasat Apr 8, 2024