How can a navigation menu be programmed in PHP to be frame-independent?

When programming a navigation menu in PHP to be frame-independent, it is important to use relative URLs instead of absolute URLs in the links. This ensures that the navigation menu will work correctly regardless of where it is placed within the website structure. By using relative URLs, the links will always point to the correct location within the website, regardless of the frame or iframe they are displayed in.

&lt;?php
echo &#039;&lt;ul&gt;&#039;;
echo &#039;&lt;li&gt;&lt;a href=&quot;index.php&quot;&gt;Home&lt;/a&gt;&lt;/li&gt;&#039;;
echo &#039;&lt;li&gt;&lt;a href=&quot;about.php&quot;&gt;About&lt;/a&gt;&lt;/li&gt;&#039;;
echo &#039;&lt;li&gt;&lt;a href=&quot;services.php&quot;&gt;Services&lt;/a&gt;&lt;/li&gt;&#039;;
echo &#039;&lt;li&gt;&lt;a href=&quot;contact.php&quot;&gt;Contact&lt;/a&gt;&lt;/li&gt;&#039;;
echo &#039;&lt;/ul&gt;&#039;;
?&gt;

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PHP navigation menu frame-independent programming web development

How can a navigation menu be programmed in PHP to be frame-independent?

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