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What is the most secure way to stop users adding html or javascript to a field. I am adding a youtube style ‘description’ where users can explain their work but I don’t want anything other than plain text in there and preferable none of the htmlentities rubbish like ‘<‘ or ‘>’.
Could I do something like this:
$clean = htmlentities($_POST['description']);
if ($clean != $_POST['description']) ... then return the form with an error?
Have you seen
strip_tags?