Variables store the different type of data that is known as data type
The various data type has performed a different task.
PHP supports many data types written below.
• String
• Integer
• Float (Floating point numbers )
• Boolean (yes or no )
• Array
• Object
• NULL
• Resource
String Data Type:-
A string is a collection of characters .
A string is written between the quotes.You can use single quotes and double quotes .
Example
<?php
$x="Hello I am learning PHP";
$y='Learn PHP';
echo $x;
echo "
";
echo $y;
?>
Run
This type of way you can use single and multiple quotes within string .
Integer Data Type in PHP:-
PHP integer is a non-decimal number .
Range of PHP integer :-
2,147,483,648 and 2,147,483,647.
An integer can be either positive or negative .
Integer must not have a decimal point numbers .
An integer must have at least on digit .
Let’s learn with an example .
In bellow example $num is an integer .The PHP var_dump() returns the data type and values .
Example
<?php
$num = 12000;
var_dump($num );
?>
Run
Float Data Type in PHP:
Float Is used for floating point numbers .
Float is a number decimal number that is exponential form (20.44) like this .
Example
<?php
$num = 20.44;
var_dump($num);
?>
Run
Boolean Data Type in PHP:-
Boolean data type represents two states true and false .
Just like we have two $x , $y variables then if we create a condition on these variable so they will be true or false .
$x=true;
$x=false ;
Example
<?php
$x=30;
$y=20;
if($x>$y)
{
echo "X is true greater";
}
else
{
echo "y is true greater";
}
0
?>
Run
Array :-
Array is a collection of similar data items. Array use for store multiple value in single variable .
Here we will take an example of array in which $fruits is a variable of array and
The PHP var_dump() function returns the data type and value:
Example
<?php
$fruits = array("Banana","apple","orange");
var_dump($fruits);
?>
Run
Object:-
A Object is a type of data which store the data and information to process all functionality of program .
In PHP, an object must be explicitly declared.
A class is a structure that contains the properties an method .
In other words a class is a collection of functions and methods .
Example
<?php
class Laptop {
function Laptop() {
$this->model = "ispiron";
}
}
// create an new object
$b = new Laptop ();
// Show all properties
echo $b->model;
?>
Run
NULL Data Type in PHP
A NULL variable is a variable that has no assigned value .
Null is a special data type which can have only one value:
When a variable is created without a value ,It has value of NULL
Let’s learn with an example of NULL.
Example
<?php
$num = "Hello we are testing .";
$num = null;
var_dump($num);
?>
Run
PHP Resource Data Type in PHP-: :-
PHP deals with various types of data like integer, double, string and etc. Resources are also coming under the list of PHP data types. But, unlike other data types, , resource identifiers are acting as a reference or identifier to access resource data provided by a third party external application.
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