I have a site where a client has inserted text. Probably by copying it from a PDF or Word document.
There is a strange character that appears at random places in the inserted text.
The site is full of them so i would like to get rid of them programmatically, either by a search and replace in the database or by filtering via PHP when the value is printed out via str_replace();
The character looks like this, and is not recognized when i search for it in the database, and not even when you search for it with the built in browser search function.
![enter image description here](https://i.stack.imgur.com/9cOdp.png)
It looks the same in the database as it does when rendered. In some cases it′s like an empty square, in some cases with a questionmark inside it.
I have tried this without luck:
$value = str_replace( '', '', $value );
(The square in first argument seems to be removed when i save)
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