PHP – Data type with example



We can assign different type of data to a variable. Data type means the various type of data that we assign to a variable.

PHP support various type of data type and all are also different from each other.

Below are the list of data type :

  1. String
  2. Integer
  3. Float (floating point numbers – also called double)
  4. Boolean
  5. Array
  6. Object
  7. NULL
  8. Resource

PHP String

A string can have letters, numbers, special characters and arithmetic values or combination of all.

<!DOCTYPE html>
<html>
<body>
<?php $a = "Hello world!"; $b = 'Hello world!'; echo $a; echo " "; echo $b; ?>
</body>
</html>

You can use both single quotation or double quotation

PHP Integer

All the number without decimal point is called as integer.

Example: 100, 2000 etc.

<!DOCTYPE html>
<html>
<body>
<?php $a = 100; var_dump($a); ?>  
</body>
</html>

PHP Float or Double

The Float or Double data type are number with decimal point.

Example: 29.6, 30.03 etc..

 
<!DOCTYPE html>
<html>
<body>
<?php $a = 29.6; var_dump($a); ?>  
</body> </html>

PHP Boolean

HP Boolean have only two possible values either true or false.

PHP Array

PHP array is used to store multiple value in one single variable.

 


<!DOCTYPE html>
<html>
<body>
<?php  
$name = array("Divya","Manas","Santosh");
var_dump($name);
?>  
</body>
</html>

PHP null

A variable of type null is a variable without any data.

 
<!DOCTYPE html>
<html>
<body>
<?php
$a= NULL;
var_dump($a);
?>
</body>
</html>