How to Remove Script Tags from HTML Content Without Affecting Formatting?

How to Remove Script Tags from HTML Content: A Comprehensive Guide

While using HTML Purifier, you may encounter the need to specifically remove script tags without affecting inline formatting or other elements. To achieve this, consider the following approaches:

Using Regular Expressions:

Although not recommended for parsing HTML/XML, regular expressions can be used as a quick fix:

$html = preg_replace('#<script(.*?)>(.*?)</script>#is', '', $html);

Using DOMDocument:

For a more reliable and secure approach, use DOMDocument:

$dom = new DOMDocument();

$dom->loadHTML($html);

$script = $dom->getElementsByTagName('script');

foreach($script as $item)
{
  $item->parentNode->removeChild($item); 
}

$html = $dom->saveHTML();

Other Removal Methods:

In addition to these two options, consider other methods:

• Regex: A more refined regular expression can be used for better accuracy.
• CSS: Hide script tags using CSS display: none.
• HTML Purifier Configuration: Configure HTML Purifier to specifically allow or deny script tags.

Remember to carefully consider the security implications of allowing or denying script tags based on the content and source of the HTML.

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