144 interview questions on PHP for developers (2025)

28 votes1759 runs1 comment

9 votes2402 runs0 comment

Théoat Mar 28, 2022

8 votes2369 runs

Théoat Mar 28, 2022

7 votes2483 runs0 comment

Théoat Mar 28, 2022

7 votes2445 runs

multidimensional

bidimensional

Théoat Mar 28, 2022

7 votes1878 runs0 comment

Théoat Mar 28, 2022

7 votes1260 runs

Anonymous authorat Jan 4, 2022

5 votes2382 runs0 comment

Théoat Mar 28, 2022

5 votes2314 runs

Théoat Mar 28, 2022

5 votes2242 runs

Théoat Mar 28, 2022

5 votes2103 runs0 comment

ternary operator

Théoat Mar 28, 2022

5 votes1656 runs0 comment

5 votes1066 runs2 comments

Anonymous authorat Aug 26, 2024

4 votes2106 runs0 comment

Théoat Mar 28, 2022

4 votes1660 runs0 comment

regular expressions

Théoat Mar 28, 2022

4 votes1160 runs

Julien Breuxat Dec 16, 2021

4 votes1156 runs2 comments

Anonymous authorat Jan 4, 2022

4 votes1059 runs0 comment

Anonymous authorat Jan 4, 2022

4 votes970 runs2 comments

ternary operator

null coalescing operator

Théoat Mar 28, 2022

3 votes2223 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.

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

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.

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 ?