PHP data types

 PHP data types

1.String

2.Integer

3.Floating point numbers

4. Boolean

5. Array 

6.object

7. NULL

PHP Strings 

• A string is a sequence of characters, like "Hello world!". 

• A string can be any text inside quotes. You can use single or double quotes: 

Example 

<?php 

$x = "Hello world!";

echo $x; 

echo "<br>"; 

$x = 'Hello world!'; 

echo $x; 

?> 

PHP Integers 

• An integer is a number without decimals. 

• Rules for integers: 

- An integer must have at least one digit (0-9) 

- An integer cannot contain comma or blanks 

- An integer must not have a decimal point 

- An integer can be either positive or negative 

- Integers can be specified in three formats: decimal (10-based), hexadecimal 

(16-based - prefixed with 0x) or octal (8-based - prefixed with 0) n

$x=10 , $y=1abc0x 

PHP Floating Point Numbers 

• A floating point number is a number with a decimal point or a number in exponential 

form. 

• In the following example we will test different numbers. The PHP var_dump()

function returns the data type and value of variables: 

Example 

<?php 

$x = 10.365; 

var_dump($x); 

?> 

PHP Booleans 

• Booleans can be either TRUE or FALSE. 

o $x=true; 

o $y=false;