function GBcase($text, $case)
{
$case = strtolower($case);
if ($case != "upper" && $case != "lower" && $case != "ucwords" && $case != "ucfirst")
{
return "函数用法错误。 $case";
}
else
{
$ucfirst = 0;
$ucwords = 0;
$news = "";
$l = strlen($text);
$GB = 0;
$english = 0;
$a = 0;
while ($a < $l)
{
$ch = substr($text, $a, 1);
if ($GB == 0 && ord($ch) >= HexDec("0x81"))
{
$GB = 1;
$english = 0;
$news .= $ch;
$ucwords = 0;
}
elseif ($GB == 1 && ord($ch) >= HexDec("0x40") && $english == 0)
{
$news .= "$ch";
$ucwords = 0;
$GB = 0;
}
else
{
if ($case == "upper")
{
$news .= strtoupper($ch);
}
elseif ($case == "lower")
{
$news .= strtolower($ch);
}
elseif ($case == "ucwords")
{
if ($ucwords == 0)
{
$news .= strtoupper($ch);
}
else
{
$news .= strtolower($ch);
}
$ucwords = 1;
}
elseif ($case == "ucfirst")
{
if ($ucfirst == 0)
{
$news .= strtoupper($ch);
$ucfirst = 1;
}
else
{
$news .= strtolower($ch);
$ucfirst = 1;
}
}
else
{
$news .= $ch;
}
if ($ch == " " || $ch == "\n")
{
$ucwords = 0;
}
$english = 1;
$GB = 0;
}
$a++;
} // END OF while
return $news;
} // end else
}
这是zencart中文版中，中文版补充的一个函数，一个用例就是对$sql查询语句进行转换，如GBcase($sql,'lower')，这里要对$sql要做的就是根据$page/$size/$sql/$rows进行分页，如果要进行大小写转换直接用函数不就行了，我对ASCII编码这些也不是很懂，所以看不太懂这个。