What are the potential pitfalls of embedding JavaScript files in PHP scripts?

One potential pitfall of embedding JavaScript files in PHP scripts is that it can make the code harder to maintain and debug, as the logic for both languages is intertwined. To solve this issue, it's recommended to separate the JavaScript code into external files and include them in the PHP script using the HTML <script> tag.

&lt;!DOCTYPE html&gt;
&lt;html&gt;
&lt;head&gt;
    &lt;title&gt;Embedding JavaScript in PHP&lt;/title&gt;
    &lt;script src=&quot;external_script.js&quot;&gt;&lt;/script&gt;
&lt;/head&gt;
&lt;body&gt;
    &lt;?php
    // PHP code here
    ?&gt;
&lt;/body&gt;
&lt;/html&gt;