How to check in yii/php if string have any disallowed HTML in it? [closed]

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In my project I use php and yii framework. I have a predefined set of the disallowed html tags(for example - "script, object") and I need to check that entered text don't contain any of these tags.

What function I can use in order to do that ?

Answer 1

If you're dealing with potentially unsafe HTML from the client (WYSIWYG editors etc.), I'd use a library like HTML Purifier. It lets you to specify allowed and disallowed tags.