Scalar data types : – this data type is further divided into four different types .
- Boolean
- Integer
- Float
- String
This data type can represent either true or false . In PHP value is 1 and value of false doesn’t any value.
is_bool : Using this function , we can check input variable is boolean or not.
(bool) var OR (boolean) var using this function , we convert variable into boolean variable.
This data type can store numeric value
is_int OR is_integer it is used to cheak input variable is integer or not .
(int)var ))OR (integer) var OR intval(var) Using this function , we convert variable into integer variable.
this data type can store decimal values .
is_float () this function cheacks input variuable is float or not.
(float)var Converts a variable into floating point number.
It is a collection of character.
In PHP , we can declar string in three ways.
- By using single quotations
- By using double quotations
- By using heredoc syntax
NOTE Variable in double quotations returns value of variables.
Heredoc PHP suports heredoc syntax to avoid the conflicts what we getting with single and double quotations.