What is DataType in php?

PHP data types define what types of data used in your application. and what types of data used in appliaction.

Each variable contain a specific data type.

PHP Support 8 types of datatypes.

Integer

Float

String

Boolean

Array

Object

Resource

NULL

Scalar Types :- There are 4 scalar data types in PHP. It holds only single value.

Integer

Float

Boolean

String

user-defined :- There are 2 user-define data types in PHP. It holds multiple value.

Array

Object

Special Types :- Two Special datatype in PHP.

Resource

NULL

Integer Data Type :-

Integer data type contain numeric value (negative or positive) . integer data type store only numeric numbers, i.e., numbers without fractional part or decimal points.

Integer creation Rules :-

An integer can be either positive or negative.

An integer must have at least one digit

An integer must not contain decimal point.

Integers can be specified in: decimal (base 10), hexadecimal (base 16), octal (base 8), or binary (base 2) notation

An integer data type is a non-decimal number between -2,147,483,648 and 2,147,483,647

Integer Data Type Example :-

File Name :

$water_temp = 98;
$ice_temp = -2;
$decimal_no = 84;
$octal = 0284;
$hexadecimal = 0x32;
echo "water temperature: " .$water_temp. "
";
echo "Ice temperature: " .$ice_temp. "
";
echo "Decimal number: " .$decimal_no. "
";
echo "Octal number: " .$octal. "
";
echo "HexaDecimal number: " .$hexadecimal. "
";
?>

Output :-

water temperature : 98
Ice Temperature : -2
Decimal number : 84
Octal number : 434
HexaDecimal Number : 32

Float Data Type

A Floatin-ponit number is a number which contain decimal point. it hold numbers with a fractional or decimal point, including a negative or positive sign.

File Name : index.php

$n1 = 2.4;
$n2 = 7.6;
$sum = $n1 + $n2;
echo "Total : " .$sum;
?>

Output :-

Total : 10.0

Boolean

In PHP a boolean data can be either TRUE or FALSE. TRUE and FALSE are predefined constants in PHP. Boolean constants are not case sensitive. That means TRUE is equivalent to true and FALSE is similar to False.

Example

$x = true;
var_dump($x);
?>

Output :-

bool(true)

$gender="female";
echo ($gender=="female");
?>

Output :-

1

$var = True; // assign the value TRUE to $var
echo $var; ?>

Output :-

1

Array Data type :-

<?php
$name= array("Sana", "Ayaan", "Mahtab");

var_dump($name);
?>

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