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pSQL() filters out all html data to database...how should html data be added or updated to custom tables? Please advice thanks.

Example
 

$qur = 'UPDATE '._DB_PREFIX_.'html_content SET data_html = "'.pSQL($data_html).'" WHERE id_shop = "'.(int)$id_shop.'";';
$results = Db::getInstance()->Execute($qur);

How do we properly cast variables (containing html)  in our module before we submit the module to the addons store?