voku /
portable-utf8
| @@ 4771-4785 (lines=15) @@ | ||
| 4768 | * |
|
| 4769 | * @return string str with all alphabetic characters converted to lowercase. |
|
| 4770 | */ |
|
| 4771 | public static function strtolower($str, $encoding = 'UTF-8') |
|
| 4772 | { |
|
| 4773 | // init |
|
| 4774 | $str = (string)$str; |
|
| 4775 | ||
| 4776 | if (!isset($str[0])) { |
|
| 4777 | return ''; |
|
| 4778 | } |
|
| 4779 | ||
| 4780 | if ($encoding !== 'UTF-8') { |
|
| 4781 | $encoding = self::normalize_encoding($encoding); |
|
| 4782 | } |
|
| 4783 | ||
| 4784 | return \mb_strtolower($str, $encoding); |
|
| 4785 | } |
|
| 4786 | ||
| 4787 | /** |
|
| 4788 | * Generic case sensitive transformation for collation matching. |
|
| @@ 4809-4822 (lines=14) @@ | ||
| 4806 | * |
|
| 4807 | * @return string str with all alphabetic characters converted to uppercase. |
|
| 4808 | */ |
|
| 4809 | public static function strtoupper($str, $encoding = 'UTF-8') |
|
| 4810 | { |
|
| 4811 | $str = (string)$str; |
|
| 4812 | ||
| 4813 | if (!isset($str[0])) { |
|
| 4814 | return ''; |
|
| 4815 | } |
|
| 4816 | ||
| 4817 | if ($encoding !== 'UTF-8') { |
|
| 4818 | $encoding = self::normalize_encoding($encoding); |
|
| 4819 | } |
|
| 4820 | ||
| 4821 | return \mb_strtoupper($str, $encoding); |
|
| 4822 | } |
|
| 4823 | ||
| 4824 | /** |
|
| 4825 | * Translate characters or replace sub-strings. |
|
