The important difference is the value left over by the operation. Forum (languefrancaise.net) où il est question de la langue pratiques linguistiques porter intérêt. It's used for a number of different reasons.
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(porter de l'intérêt à / pour) For what its worth, check the connection string in your config file. I use utf8 for header page and mysql encode.
It's a link that links to nowhere essentially (it just adds # onto the url).
My code was trying to hit a database that didn't exist on my server. For instance, if you're using some sort of javascript/jquery and don't. For me someone had modified one of the server names and checked it in. My page often shows things like ã«, ã, ã¬, ã¹, ã in place of normal characters.