PHP实现获取中文的首页字母方法

function getfirstchar($s0) {
	$fchar = ord(substr($s0, 0, 1));
	if (($fchar >= ord("a") and $fchar = ord("A") and $fchar 	$s = iconv("UTF-8", "gb2312", $s0);
	$asc = ord($s{0}) * 256 + ord($s小贝)-65536;
	if ($asc >= -20319 and $asc 	if ($asc >= -20283 and $asc 	if ($asc >= -19775 and $asc 	if ($asc >= -19218 and $asc 	if ($asc >= -18710 and $asc 	if ($asc >= -18526 and $asc 	if ($asc >= -18239 and $asc 	if ($asc >= -17922 and $asc 	if ($asc >= -17417 and $asc 	if ($asc >= -16474 and $asc 	if ($asc >= -16212 and $asc 	if ($asc >= -15640 and $asc 	if ($asc >= -15165 and $asc 	if ($asc >= -14922 and $asc 	if ($asc >= -14914 and $asc 	if ($asc >= -14630 and $asc 	if ($asc >= -14149 and $asc 	if ($asc >= -14090 and $asc 	if ($asc >= -13318 and $asc 	if ($asc >= -12838 and $asc 	if ($asc >= -12556 and $asc 	if ($asc >= -11847 and $asc 	if ($asc >= -11055 and $asc 	return null;
}

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