htmlpurifier  4.5.0
About: HTML Purifier is an HTML filtering solution. It tries to remove all malicious code (XSS) and to make sure the HTML is standards compliant.
  Fossies Dox: htmlpurifier-4.5.0.tar.gz  ("inofficial" and yet experimental doxygen-generated source code documentation)  
 All Classes Files Functions Variables Pages
htmlpurifier Documentation

HTML Purifier is an HTML filter that will take an arbitrary snippet of HTML and rigorously test, validate and filter it into a version that is safe for output onto webpages. It achieves this by:

  1. Lexing (parsing into tokens) the document,
  2. Executing various strategies on the tokens:
    1. Removing all elements not in the whitelist,
    2. Making the tokens well-formed,
    3. Fixing the nesting of the nodes, and
    4. Validating attributes of the nodes; and
  3. Generating HTML from the purified tokens.

However, most users will only need to interface with the HTMLPurifier and HTMLPurifier_Config.