How can PHP developers ensure that only textual content is extracted from HTML body tags while excluding other elements like scripts and metadata?

To ensure that only textual content is extracted from HTML body tags while excluding other elements like scripts and metadata, PHP developers can use PHP's strip_tags() function with a whitelist of allowed tags. By specifying only the <p>, <h1>, <h2>, <h3>, <h4>, <h5>, <h6>, <ul>, <ol>, <li>, <a>, <strong>, <em>, and <br> tags as allowed, we can strip out unwanted tags like <script> and <meta>. 

$html = &#039;&lt;html&gt;&lt;head&gt;&lt;title&gt;Sample Page&lt;/title&gt;&lt;/head&gt;&lt;body&gt;&lt;h1&gt;Hello World!&lt;/h1&gt;&lt;p&gt;This is a sample paragraph.&lt;/p&gt;&lt;script&gt;alert(&quot;Hello, World!&quot;);&lt;/script&gt;&lt;/body&gt;&lt;/html&gt;&#039;;

$allowed_tags = &#039;&lt;p&gt;&lt;h1&gt;&lt;h2&gt;&lt;h3&gt;&lt;h4&gt;&lt;h5&gt;&lt;h6&gt;&lt;ul&gt;&lt;ol&gt;&lt;li&gt;&lt;a&gt;&lt;strong&gt;&lt;em&gt;&lt;br&gt;&#039;;
$clean_content = strip_tags($html, $allowed_tags);

echo $clean_content;

Keywords

PHP DOMDocument strip_tags text extraction HTML parsing

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