Datatypes in PHP

This code gives an overview of PHP datatypes

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> VARIABLES ASSIGNMENT </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
</HEAD>

<BODY>
<h2>BOOLEAN</H2>
<?php
$auth=true;
$auth2=false;
?>

auth:<?php echo $auth ?>
<br>
auth2:<?php echo $auth2 ?>

<h2>INTEGER</H2>
<?php
$age=47;
?>
<?php echo $age ?>

<h2>FLOATING POINT</H2>
<?php
$temp=78.654;
?>

<?php echo $temp?>

<h2>STRING</H2>
<?php
$name='pandian';
$salary="$25000";
//double quotes automatically parses the special symbols
?>

<?php echo "$name" ?>

<?php echo "$salary" ?>

</BODY>
</HTML>

Output

BOOLEAN

auth:1
auth2:

INTEGER

47

FLOATING POINT

78.654

STRING

pandian $25000