(PHP 4 >= 4.0.6, PHP 5)
mb_convert_kana — Convert "kana" one from another ("zen-kaku", "han-kaku" and more)
$str
   [, string $option = "KV"
   [, string $encoding = mb_internal_encoding()
  ]] )
   Performs a "han-kaku" - "zen-kaku" conversion for string str. 
   This function is only useful for Japanese.
  
strThe string being converted.
optionThe conversion option.
Specify with a combination of following options.
| Option | Meaning | 
|---|---|
| r | Convert "zen-kaku" alphabets to "han-kaku" | 
| R | Convert "han-kaku" alphabets to "zen-kaku" | 
| n | Convert "zen-kaku" numbers to "han-kaku" | 
| N | Convert "han-kaku" numbers to "zen-kaku" | 
| a | Convert "zen-kaku" alphabets and numbers to "han-kaku" | 
| A | Convert "han-kaku" alphabets and numbers to "zen-kaku" (Characters included in "a", "A" options are U+0021 - U+007E excluding U+0022, U+0027, U+005C, U+007E) | 
| s | Convert "zen-kaku" space to "han-kaku" (U+3000 -> U+0020) | 
| S | Convert "han-kaku" space to "zen-kaku" (U+0020 -> U+3000) | 
| k | Convert "zen-kaku kata-kana" to "han-kaku kata-kana" | 
| K | Convert "han-kaku kata-kana" to "zen-kaku kata-kana" | 
| h | Convert "zen-kaku hira-gana" to "han-kaku kata-kana" | 
| H | Convert "han-kaku kata-kana" to "zen-kaku hira-gana" | 
| c | Convert "zen-kaku kata-kana" to "zen-kaku hira-gana" | 
| C | Convert "zen-kaku hira-gana" to "zen-kaku kata-kana" | 
| V | Collapse voiced sound notation and convert them into a character. Use with "K","H" | 
encodingThe encoding
parameter is the character encoding. If it is omitted, the internal character
encoding value will be used.
The converted string.
Example #1 mb_convert_kana() example
<?php
/* Convert all "kana" to "zen-kaku" "kata-kana" */
$str = mb_convert_kana($str, "KVC");
/* Convert "han-kaku" "kata-kana" to "zen-kaku" "kata-kana" 
   and "zen-kaku" alpha-numeric to "han-kaku" */
$str = mb_convert_kana($str, "KVa");
?>