144 interview questions on PHP for developers (2025)

27 votes1661 runs1 comment

9 votes2300 runs0 comment

Théoat Mar 28, 2022

9 votes2277 runs

Théoat Mar 28, 2022

7 votes2380 runs0 comment

Théoat Mar 28, 2022

7 votes2340 runs

multidimensional

bidimensional

Théoat Mar 28, 2022

7 votes1823 runs0 comment

Théoat Mar 28, 2022

7 votes1228 runs

Anonymous authorat Jan 4, 2022

5 votes2283 runs0 comment

Théoat Mar 28, 2022

5 votes2216 runs

Théoat Mar 28, 2022

5 votes2149 runs

Théoat Mar 28, 2022

5 votes1571 runs0 comment

5 votes1036 runs2 comments

Anonymous authorat Aug 26, 2024

4 votes2019 runs0 comment

Théoat Mar 28, 2022

4 votes2017 runs0 comment

ternary operator

Théoat Mar 28, 2022

4 votes1628 runs0 comment

regular expressions

Théoat Mar 28, 2022

4 votes1146 runs

Julien Breuxat Dec 16, 2021

4 votes1126 runs2 comments

Anonymous authorat Jan 4, 2022

4 votes1029 runs0 comment

Anonymous authorat Jan 4, 2022

4 votes947 runs2 comments

ternary operator

null coalescing operator

Théoat Mar 28, 2022

3 votes2125 runs0 comment

Théoat Mar 28, 2022

144 interview questions on PHPfor developers (2025)

Test your technical skills before an interview of PHP with 144 corrected questions. Beginner, Intermediate or Expert level.

144 interview questions on PHPfor developers (2025)

Test your technical skills before an interview of PHP with 144 corrected questions. Beginner, Intermediate or Expert level.

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

Which of the following statements are true ?

Which of the following statements are true ?

What is the value of the `PHP_FLOAT_MIN` variable?

What type of array is the following?

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

PHP code that throws an error.

What are the risks when running the following code ?

Usage of the global scope in a PHP function.

Usage of the spaceship operator in a PHP loop.

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

PHP function with named and positional arguments.

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

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

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

Which of these PHP code snippets are valid?

Is this function signature valid? ```php <?php interface Demo { public function bar(): ?mixed; } ```

Attributes are metadata that can be added to classes, properties, constants or methods.

Usage of the null coalescing operator in PHP

What is the `is_long()` function for ?