/**
* @param $s
* @param int $normalization_form
* @param string $leading_combining
*
* @return array|bool|mixed|string
*/
public static function filterString($s, $normalization_form = 4, $leading_combining = '◌')
{
if (false !== strpos($s, "\r")) {
// Workaround https://bugs.php.net/65732
$s = str_replace(array("\r\n", "\r"), "\n", $s);
}
if (preg_match('/[\\x80-\\xFF]/', $s)) {
if (Normalizer::isNormalized($s, $normalization_form)) {
$n = '-';
} else {
$n = Normalizer::normalize($s, $normalization_form);
if (isset($n[0])) {
$s = $n;
} else {
$s = UTF8::encode('UTF-8', $s);
}
}
if ($s[0] >= "€" && isset($n[0], $leading_combining[0]) && preg_match('/^\\p{Mn}/u', $s)) {
// Prevent leading combining chars
// for NFC-safe concatenations.
$s = $leading_combining . $s;
}
}
return $s;
}
/**
* @param string $str
* @param int $form
*
* @return bool
*/
function normalizer_is_normalized($str, $form = s\Normalizer::NFC)
{
return s\Normalizer::isNormalized($str, $form);
}
/**
* normalizes to UTF-8 NFC, converting from CP-1252 when needed
*
* @param $var
* @param int $normalization_form
* @param string $leading_combining
*
* @return mixed|string
*/
public static function filter($var, $normalization_form = 4, $leading_combining = '◌')
{
switch (gettype($var)) {
case 'array':
foreach ($var as $k => $v) {
/** @noinspection AlterInForeachInspection */
$var[$k] = self::filter($v, $normalization_form, $leading_combining);
}
break;
case 'object':
foreach ($var as $k => $v) {
$var->{$k} = self::filter($v, $normalization_form, $leading_combining);
}
break;
case 'string':
if (false !== strpos($var, "\r")) {
// Workaround https://bugs.php.net/65732
$var = str_replace(array("\r\n", "\r"), "\n", $var);
}
if (preg_match('/[\\x80-\\xFF]/', $var)) {
if (Normalizer::isNormalized($var, $normalization_form)) {
$n = '-';
} else {
$n = Normalizer::normalize($var, $normalization_form);
if (isset($n[0])) {
$var = $n;
} else {
$var = self::encode('UTF-8', $var);
}
}
if ($var[0] >= "�" && isset($n[0], $leading_combining[0]) && preg_match('/^\\p{Mn}/u', $var)) {
// Prevent leading combining chars
// for NFC-safe concatenations.
$var = $leading_combining . $var;
}
}
break;
}
return $var;
}
