How to execute HTML code inside PHP code without echo?

I share my experience. I was trying to create a website with HTML and CSS and I was echo block of HTML containg PHP variable . I haven't heard about that we can directly execute HTML code inside PHP after closing PHP . It was hard to echo HTML code but after that I got a solution to use HTML code inside PHP block of code . 

Yes , it's possible to execute block of HTML code inside PHP without echo any HTML block also you can place your PHP variable in HTML code .

Let's see an example 

<?php 
If(!isset($var)){
?>
<div class="css_class">
Variable is not set . It's your HTML code
</div>
<p>This is HTML paragraph .In this way, You can add block of code inside PHP without echo </p>
<?php
}
?>

The HTML execution process can be done by separating by PHP opening <?php and closing ?> tags . If you want to run HTML code without echo then you should separate HTML code. 

Example 1- 

<?php 
//PHP code here 
?> 
<h2> This is HTML heading <?php echo $var; ?></h2>
<?php 
//PHP code here 
?> 

You can use HTML code if you separate HTML and PHP code inside PHP tags(<?php ?> ). 

Example 2 - 

<?php 
$i=1995;
while($i<=2001)
{ 
?> 
<h2>Year:-<?php echo $i;?></h2> 
<?php 
$i++;
} 

Output - 

Year:-1995
Year:-1996
Year:-1997
Year:-1998
Year:-1999
Year:-2000
Year:-2001

In this example, we are displaying years from 1995 to 2001 and separating HTML code without echo inside PHP code. 

HTML code can be executed by including a file. 

Create a file like - myfile.php 

myfile.php 

<h2>This is HTML code. </h2> 
<p>This is paragraph. </p>

Now, include() file in PHP . 

<?php 
include('myfile.php'); 
$var='Hello';
?> 

In these ways , you can execute HTML code inside PHP without echo.