How can PHP code be structured to incorporate stylesheets for formatting data output, rather than returning it as a string within echo statements?

When outputting data in PHP, it is best practice to separate the presentation (styling) from the logic (data processing). This can be achieved by using stylesheets to format the output instead of embedding styling directly within echo statements. One way to do this is by creating a separate CSS file and linking it to the PHP file using the <link> tag in the HTML output. 

&lt;!DOCTYPE html&gt;
&lt;html&gt;
&lt;head&gt;
    &lt;title&gt;Styled Output&lt;/title&gt;
    &lt;link rel=&quot;stylesheet&quot; type=&quot;text/css&quot; href=&quot;styles.css&quot;&gt;
&lt;/head&gt;
&lt;body&gt;
    &lt;?php
    // Data processing logic
    $data = &quot;Hello, World!&quot;;
    ?&gt;

    &lt;div class=&quot;output&quot;&gt;
        &lt;?php echo $data; ?&gt;
    &lt;/div&gt;
&lt;/body&gt;
&lt;/html&gt;

Keywords

PHP stylesheets formatting data output echo statements

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