/**
* Recursively cleans arrays, objects, and strings. Removes ASCII control
* codes and converts to UTF-8 while silently discarding incompatible
* UTF-8 characters.
*
* @param string string to clean
* @return string
*/
public static function clean($str)
{
if (is_array($str) or is_object($str)) {
foreach ($str as $key => $val) {
// Recursion!
$str[Input::clean($key)] = Input::clean($val);
}
} elseif (is_string($str) and $str !== '') {
// Remove control characters
$str = str::strip_ascii_ctrl($str);
if (!str::is_ascii($str)) {
// Disable notices
$ER = error_reporting(~E_NOTICE);
// iconv is expensive, so it is only used when needed
$str = iconv(Eight::CHARSET, Eight::CHARSET . '//IGNORE', $str);
// Turn notices back on
error_reporting($ER);
}
}
return $str;
}
