Inserting computer code content through HTML tags and special characters

How to show the content of the code on the page? PHP, HTML, JS - this can be a question in the comments to an article, or a tutorial. Some systems automatically convert risky characters into safe formulas. These include triangular quotation marks. We will write a simple PHP code

Obviously, on the page it will be displayed as a published caption, since the code will work

In order to achieve the desired effect, quotes are replaced with symbols < instead of an opening quote, and > instead of closing.

<?php 
   echo "Hello, World!";
   echo “Good day!”;
 ?>

In order for the code to be displayed with line breaks and indents, it should be wrapped in a tag <pre>.

The end result will look like this:

<pre>
    &lt; ?php 
        echo "Hello, World!";
        echo “Good day!”;
    ?&gt; 
<pre>