将子弹列表从办公室复制/粘贴到公式PHP

I'm developping a website and I have a problem. Some users copy bullet list from ms-Office and paste it in a textarea that I manage in php. Here is the error that I get

How can I manage that? I've tried this:

$field_value = preg_replace('/\x03/', '', $field_value);

But is there something more generic that could manage all kind of bullet list from ms-office?

I found a solution, I don't know if it's the best one but it works fine. I used this regex:

$field_value = preg_replace("/[^a-zA-Z0-àèìòùÀÈÌÒÙáéíóúýÁÉÍÓÚÝâêîôûÂÊÎÔÛãñõÃÑÕäëïöüÿÄËÏÖÜŸçÇßØøÅåÆæœ&`_.,;@#%~'\"\+\
\*\?\[\^\]\$\(\)\{\}\=\!\<\>\|\:\-\s\\\\]/u", "", $field_value);