function highlight_phrase áéíóú - ÁÉÍÓÚ

[eluser]Unknown[/eluser]
áéíóú - ÁÉÍÓÚ characters do not adequately replace...
return preg_replace('/('.preg_quote($phrase, '/').')/ui', $tag_open."\\1".$tag_close, $str);

Code:

function highlight_phrase($str, $phrase, $tag_open = '<strong>', $tag_close = '</strong>')
    {
        if ($str == '')
        {
            return '';
        }
    
        if ($phrase != '')
        {
            return preg_replace('/('.preg_quote($phrase, '/').')/ui', $tag_open."\\1".$tag_close, $str);
        }

        return $str;
    }

In config.php file(to accept any character on URL):

Code:

$config['permitted_uri_chars'] = utf8_encode('áéíóúÁÉÍÓÚäëïöüÄËÏÖÜñÑ a-z 0-9~%.:_\-+*');