| protected static escapeAttrChar ( array $matches ) : mixed | ||
| $matches | array | |
| return | mixed | Unicode replacement if character is undefined in HTML, named HTML entity if available (only those that XML supports), upper hex entity if a named entity does not exist or entity with the &#xHH; format if ASCII value is less than 256. |
protected static function escapeAttrChar($matches)
{
$char = $matches[0];
if (static::charIsUndefined($char)) {
return '�';
}
$dec = hexdec(bin2hex($char));
$namedEntities = array(34 => '"', 38 => '&', 60 => '<', 62 => '>');
if (isset($namedEntities[$dec])) {
return $namedEntities[$dec];
}
if ($dec > 255) {
return sprintf('&#x%04X;', $dec);
}
return sprintf('&#x%02X;', $dec);
}