I am using ...
$firstsheettitleheader = array("name"=>"Title Needing Trademark™", ...
... to add a Title to a PHPSpreadsheet and I need to use a trademark symbol. I have tried ™ (shown above) and ™ but, in both cases, the cell displays the code as text. How can I add a trademark symbol to the text string for a PHPSpreadsheet cell?