Converting named HTML entities to numeric HTML entities

Question

Is there a PHP function to convert named HTML entities into their respective numeric HTML entities?

For example:

$str = \"Oggi è un bel&am         


        

Answer 1

This solution is based on the code from php.net:

function entities_to_unicode($str) {
    $str = html_entity_decode($str, ENT_QUOTES, 'UTF-8');
    $str = preg_replace_callback("/(&#[0-9]+;)/", function($m) { return mb_convert_encoding($m[1], "UTF-8", "HTML-ENTITIES"); }, $str);
    return $str;
}

$str = 'Oggi è un bel giorno';
echo entities_to_unicode($str);