voku /
portable-utf8
| @@ 4788-4802 (lines=15) @@ | ||
| 4785 | * |
|
| 4786 | * @return string str with all alphabetic characters converted to lowercase. |
|
| 4787 | */ |
|
| 4788 | public static function strtolower($str, $encoding = 'UTF-8') |
|
| 4789 | { |
|
| 4790 | // init |
|
| 4791 | $str = (string)$str; |
|
| 4792 | ||
| 4793 | if (!isset($str[0])) { |
|
| 4794 | return ''; |
|
| 4795 | } |
|
| 4796 | ||
| 4797 | if ($encoding !== 'UTF-8') { |
|
| 4798 | $encoding = self::normalize_encoding($encoding); |
|
| 4799 | } |
|
| 4800 | ||
| 4801 | return \mb_strtolower($str, $encoding); |
|
| 4802 | } |
|
| 4803 | ||
| 4804 | /** |
|
| 4805 | * Generic case sensitive transformation for collation matching. |
|
| @@ 4826-4839 (lines=14) @@ | ||
| 4823 | * |
|
| 4824 | * @return string str with all alphabetic characters converted to uppercase. |
|
| 4825 | */ |
|
| 4826 | public static function strtoupper($str, $encoding = 'UTF-8') |
|
| 4827 | { |
|
| 4828 | $str = (string)$str; |
|
| 4829 | ||
| 4830 | if (!isset($str[0])) { |
|
| 4831 | return ''; |
|
| 4832 | } |
|
| 4833 | ||
| 4834 | if ($encoding !== 'UTF-8') { |
|
| 4835 | $encoding = self::normalize_encoding($encoding); |
|
| 4836 | } |
|
| 4837 | ||
| 4838 | return \mb_strtoupper($str, $encoding); |
|
| 4839 | } |
|
| 4840 | ||
| 4841 | /** |
|
| 4842 | * Translate characters or replace sub-strings. |
|
