mb_convert_kana()

(PHP 4 >= 4.0.6, PHP 5, PHP 7)

将“kana”从一个转换为另一个（“zen-kaku”、“han-kaku”等）

说明

对字符串str执行“han-kaku”-“zen-kaku”转换。该功能仅对日语有用。

参数

正在转换的字符串

The conversion option.

Specify with a combination of following options.

$encoding参数为字符编码。如果省略，则使用内部字符编码。

返回值

The converted string.

范例

mb_convert_kana() example

It seems that mb_convert_kana() doesn't convert symbols such as ' (single quoatation). It affected my program when I insert data into database. 
So, I've found 2 ways to solve this.
1) Use Javascript to convert those non-supported symbols before sending query string to your php page.
2) Use php function, str_replace $str, to replace those non-supported symbols. For example, $str = str_replace("'", "", $str);
where the first single quot is half-width(han kaku), and the second one is full-width(zen kaku).

I didn't find Japanese sorting function. 
(mb_sort_kana or something)
Only SJIS encoding treats hankaku kata kana,
 I can't post here copy & paste version script.
I'm sorry...
You will replace comments with appropriate japanese string,
and write exception handlings between lines as you like. 

to make this function work you have to add following two lines above this function.
mb_language("Ja");
mb_internal_encoding("utf-8");
mb_convert_kana($_POST['something_value'], "rna");

I did that manually when I was not getting expected result using mb_convert_kana().

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