Convert emoji to html code or display emoji as html

Question

I want to covert emoji 😀 to html 😀 and display html code not emoji in my website, i use htmlentities("😀"); but not working at all. How to display emoji as html code in my website or convert it?

Answer 1

$utf32  = mb_convert_encoding( "😀", 'UTF-32', 'UTF-8' );
$hex4 = bin2hex($utf32);
$dec = hexdec($hex4);
echo "&#$dec;";        // 😀
echo "&#$dec;";    // 😀