What steps can be taken to troubleshoot and resolve issues with htmlentities in PHP?

When using htmlentities in PHP, if you encounter issues such as special characters not being encoded properly or displaying incorrectly, one solution is to specify the correct character encoding. You can do this by passing the optional parameter $encoding to htmlentities, specifying the character encoding you want to use.

// Specify the character encoding as UTF-8
$encoded_string = htmlentities($string, ENT_QUOTES, 'UTF-8');