What are the different variable types in PHP and how do they differ from each other?

In PHP, there are several variable types including integers, floats, strings, booleans, arrays, objects, and NULL. These variable types differ from each other in terms of the data they can hold and how they are used in programming. It is important to understand the differences between these variable types in order to effectively work with data in PHP. 

// Example of different variable types in PHP
$integerVar = 5; // integer variable
$floatVar = 3.14; // float variable
$stringVar = "Hello, World!"; // string variable
$boolVar = true; // boolean variable
$arrayVar = array(1, 2, 3); // array variable
$objectVar = new stdClass(); // object variable
$nullVar = NULL; // NULL variable

Keywords

Variable types PHP data types scalar types compound types

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