function mb_convert_case($str, $case, $encoding = '')
{
global $mbemu_internals;
switch ($case) {
case MB_CASE_UPPER:
return mb_strtoupper($str, $encoding);
case MB_CASE_LOWER:
return mb_strtolower($str, $encoding);
case MB_CASE_TITLE:
include_once dirname(__FILE__) . '/upper.table';
include_once dirname(__FILE__) . '/lower.table';
$encoding = mb_detect_encoding($str, $encoding);
$str = mb_convert_encoding($str, 'UTF-8', $encoding);
$max = preg_match_all('/' . $mbemu_internals['regex'][4] . '/', $str, $allchars);
// make array of chars
$newst = '';
$isalpha = FALSE;
for ($i = 0; $i < $max; ++$i) {
$val = _utf8ucs2($allchars[0][$i]);
//get ucs2 value
if (0x41 <= $val && $val <= 0x5a) {
if ($isalpha) {
$val += 0x20;
// to lower;
} else {
$isalpha = TRUE;
}
$newst .= _ucs2utf8($val);
} elseif (0x61 <= $val && $val <= 0x7a) {
if (!$isalpha) {
$val -= 0x20;
// to upper
$isalpha = TRUE;
}
$newst .= _ucs2utf8($val);
} elseif ($upper = $mbemu_internals['upperarray'][$val]) {
// this char is lower
if ($isalpha) {
$newst .= _ucs2utf8($val);
} else {
$isalpha = TRUE;
$newst .= _ucs2utf8($upper);
}
} elseif ($lower = $mbemu_internals['lowerarray'][$val]) {
// this char is upper
if ($isalpha) {
$newst .= _ucs2utf8($lower);
} else {
$isalpha = TRUE;
$newst .= _ucs2utf8($val);
}
} else {
$isalpha = FALSE;
$newst .= $allchars[0][$i];
}
}
return mb_convert_encoding($newst, $encoding, 'UTF-8');
}
}
function _euctoutf8(&$str)
{
global $euc_match, $sjistoucs2, $_euctosjis_byte1, $_euctosjis_byte2;
$st = '';
$max = preg_match_all("/{$euc_match}/", $str, $allchars);
// 文字の配列に分解
for ($i = 0; $i < $max; ++$i) {
$num = ord($allchars[0][$i]);
// 各文字の1バイト目を数値として取り出す
if ($num2 = ord($allchars[1][$i])) {
// 2バイト目がある場合
if ($num & 1) {
$sjis = $_euctosjis_byte1[$num] << 8 | $_euctosjis_byte2[0][$num2];
} else {
$sjis = $_euctosjis_byte1[$num] << 8 | $_euctosjis_byte2[1][$num2];
}
$st .= _ucs2utf8($sjistoucs2[$sjis]);
} elseif ($num3 = ord($allchars[2][$i])) {
$st .= _ucs2utf8(0xfec0 + $num3);
} else {
//半角英数
$st .= chr($num);
}
}
return $st;
}
