What are the different types of variables in PHP?

In PHP, variables are categorized based on their data types. Here are the main types:

Integer: Whole numbers without a decimal point. E.g., $age = 25;
Float (or Double): Numbers with a decimal point. E.g., $price = 19.99;
String: A sequence of characters. E.g., $name = "John";
Boolean: Represents either true or false. E.g., $isLoggedIn = true;
Array: A collection of values. Can be indexed or associative. E.g., $colors = array("red", "green", "blue");
Object: An instance of a class, containing properties and methods. E.g., $car = new Car();
NULL: Represents a variable with no value. E.g., $var = NULL;
Resource: A special type used to hold references to external resources (like database connections). E.g., $conn = mysqli_connect("localhost", "user", "password");

These types cover most of the data you'll work with in PHP.

Written by Shaikh Abdul Shahid

A Full-Stack Developer with experience in PHP, Laravel, JavaScript, and React.
Founder of Online Learner, sharing practical knowledge and programming tutorials.
Building and maintaining real-world web applications since 2017.

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What are the different types of variables in PHP?

Written by Shaikh Abdul Shahid

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