Php: data types

In real-world application, we need to work with numbers, Booleans, strings and complex data. Php support variety of datatypes to represent different values.

 

Unlike other language (Ex: java, C), you no need to specify the type of data that this variable is going to hold, PHP handles this for us, this makes php a weakly typed language.

 

Example 1

$age = 23;

Variable ‘age’ holds numeric data.

 

Example 2

$name = "Krishna";

Variable ‘name’ holds string data.

 

Example 3

$male = true;

Variable ‘male’ holds Boolean data.

 

data_types_demo.php

#!/usr/bin/php

<?php
$age = 23;
$name = "Krishna";
$male = true;

echo "age is set to $age\n";
echo "name is set to $name\n";
echo "male is set to $male\n";

?> 

Output

$./data_types_demo.php 

age is set to 23
name is set to Krishna
male is set to 1

 

 

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