PHP Data Types

There is generally various types of data types are present in php like-
Strings, Array, Boolean, Integer ,Object and Null.

• A String is a type of data. A string can contain letters, numbers or characters.  A string can be short or long.
• Here is the example of string:

<?php$stringA = “Hello World”;?>

• An Array is a collection of data values, organized as an ordered collection of key-value pairs.

•      Here is the Example of  Array:

<?php $bikes=array(“Yamaha”.”Hero”,”TVS”,”Honda”); var_dump($bikes);?>

•  The boolean data type represents only two values that can be either 1 or 0.Boolean values are used mainly to compare conditions for use in conditional statements. For example, PHP evaluates an expression, such as $a > $b, so the  output is either TRUE or FALSE.

•  The number which do not contain any decimal point is called Integer.
•  Integer can be possitive or negative but integer do not contain any comma and blank. It can be express any of the three formats i.e. decimal, haxadecimal, octal.

<?php$a = 65; var_dump($a); ?>

• An Object is a php data type size that store the data and information,
  object should be explicitly declare.
  

<?php class a {} class b extends a { function sayHelloWorld() { print "HelloWorld"; } } $x = new a(); $x->sayHelloworld(); ?>

• NULL value shows that variable has no value.

<?php $a=”Hello!”; $a=null; var_dump($a); ?>