PHP Different Data Types!!
In this article we will discuss about Data types in PHP.
Data - types In PHP
Integer are numbers without any fraction. like 145
It stores negative and positive number.
It can be decimal, hexadecimal and octal.
Variable declared or define with $ sign in php.
Program :
Output :
7
7
as shown in above program we declare two integers x and y and print sum of it.
Strings
String is a sequence of characters.
String is declared in a quotation (" ").
Program :
Output :
string stored in string1 variable
Array
Array is a sequence of variables for same data type values.
PHP has three type of array
1) numeric array
2) Associative array
3) Multidimensional array
PHP has three type of array
1) numeric array
2) Associative array
3) Multidimensional array
Output :
0
1
2
hello
Array can stores number, characters and strings.
In above example we store number in which there is no need of quote (" ") and in string it can be stored in single or double quotations.
After that we can display whole array as well as a particular array with it's index number.
Double
Doubles print the minimum number of decimal places needed.
Program :
Output : 5.09
Boolean
Boolean has only two possible values True or False.
Mostly, it is used for conditional statements.
If condition is true then it returns true and if condition is false then it returns false.
Program :
Output : 1
As shown in above program when the value is true then it return 1.
When value of variable is false then it stored null value.
NULL
Null value assign the value of variable is NULL.
It means we assign no value to the variable.
When we create a variable without assign value, by default it stores null.
Program :
Output of this program will blank page. because we set null value of a.
Objects :
Object is a instance of a class.
class must contain a function and property.
we use new keyword with class name for create object.
Program :
Output :
function called
function called
As shown in above program we create a class with function b.
After that we create an object of class b it executes the function b.
Resources
PHP Resources is a storing of a reference to the functions.
it is not the actual data type.
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