获取汉字拼音首字母大写

获取汉字首字母大写
function get_letter($string) {
$charlist = mb_str_split($string);
return implode(array_map("getfirstchar", $charlist));
}
function mb_str_split($string) {
// Split at all position not after the start: ^
// and not before the end: $
return preg_split('/(? }

function getfirstchar($s0) {
$fchar = ord(substr($s0, 0, 1));
if (($fchar >= ord("a") and $fchar = ord("A") and $fchar $s = iconv("UTF-8", "GBK", $s0);
$asc = ord($s{0}) * 256 + ord($s{1})-65536;
if ($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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