48 interview questions on PHP - Fundamentals for developers (2025)

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multidimensional

bidimensional

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ternary operator

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regular expressions

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ternary operator

null coalescing operator

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Théoat Mar 28, 2022

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.

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.

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.

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 ?

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

Usage of the null coalescing operator in PHP

What is the `is_long()` function for ?

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

Which answer(s) can determine if `$a` is of type `MyPHPClass` or not ?

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

Pass by reference in PHP

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