/**
* Recursively cleans arrays, objects, and strings. Removes ASCII control
* codes and converts to the requested charset while silently discarding
* incompatible characters.
*
* @param mixed $str
* @return string
*/
public static function clean($str)
{
if (is_array($str) || is_object($str)) {
foreach ($str as $key => $val) {
$str[$key] = self::clean($val);
}
} else {
if (is_string($str) && $str !== '') {
$str = mb_strtolower(UTF8::strip_ascii_ctrl($str));
if (!UTF8::is_ascii($str)) {
$str = strtolower(self::transliterate_to_ascii($str));
}
if (!UTF8::is_ascii($str)) {
$str = UTF8::strip_non_ascii($str);
}
}
}
return $str;
}
/**
* Tests UTF8::strip_non_ascii
*
* @test
* @dataProvider provider_strip_non_ascii
*/
public function test_strip_non_ascii($input, $expected)
{
$this->assertSame($expected, UTF8::strip_non_ascii($input));
}
