PHP Data Types

Any variable has to declare for its data type.

Data types in PHP where

S. No	Data type	Details
1	String	is a sequence of characters. It is declared in double quotes. Example: $a = "PHP Language!".
2	Integer	It is a non decimal number lies between -2,147,483,648 and 2,147,483,647.
3	Float	It is a number with a decimal point. Example: $a = 5.12342;
4	Boolean	It is used to represent states which are possible. i.e. TRUE or FALSE.
5	Array	It is collection of similar data types. I.e It can store multiple values with a single variable name. $colors = array("blue","green","yellow");
6	Object	It is a real world thing or Entity which stores data and information on how to process that data. In PHP object is created with “new” keywordand it should be explicitly declared. In PHP a class contains properties and methods. Example: To create a class Bulb in php to call a function in that class. <html> <body> <?php class Bulb { function Bulb() { $this->Version = "LED"; } } // creating object $objectforBulbclass = new Bulb(); // showing object properties echo $objectforBulbclass->Version; ?> Output: LED
7	NULL	Null data type variable is not assigned any value to it. Example: <?php $a = "PHP Language!"; echo $a; echo "<br>"; $a = null; echo var_dump($a); ?> Output: PHP Language! NULL

Home Back