PHP获取中文首字母函数
function getFirstChar($zh_cn) {$firsh_zh = mb_substr($zh_cn, 0, 1);
$fchar = ord($firsh_zh{0});
if ($fchar >= ord("A") && $fchar <= ord("z")) {
return strtoupper($firsh_zh{0});
}
$s1 = iconv("UTF-8", "gb2312", $firsh_zh);
$s2 = iconv("gb2312", "UTF-8", $s1);
if ($s2 == $firsh_zh) {
$s = $s1;
} else {
$s = $firsh_zh;
}
$asc = ord($s{0}) * 256 + ord($s{1}) - 65536;
if ($asc >= -20319 and $asc <= -20284)
return "A";
if ($asc >= -20283 and $asc <= -19776)
return "B";
if ($asc >= -19775 and $asc <= -19219)
return "C";
if ($asc >= -19218 and $asc <= -18711)
return "D";
if ($asc >= -18710 and $asc <= -18527)
return "E";
if ($asc >= -18526 and $asc <= -18240)
return "F";
if ($asc >= -18239 and $asc <= -17923)
return "G";
if ($asc >= -17922 and $asc <= -17418)
return "H";
if ($asc >= -17417 and $asc <= -16475)
return "J";
if ($asc >= -16474 and $asc <= -16213)
return "K";
if ($asc >= -16212 and $asc <= -15641)
return "L";
if ($asc >= -15640 and $asc <= -15166)
return "M";
if ($asc >= -15165 and $asc <= -14923)
return "N";
if ($asc >= -14922 and $asc <= -14915)
return "O";
if ($asc >= -14914 and $asc <= -14631)
return "P";
if ($asc >= -14630 and $asc <= -14150)
return "Q";
if ($asc >= -14149 and $asc <= -14091)
return "R";
if ($asc >= -14090 and $asc <= -13319)
return "S";
if ($asc >= -13318 and $asc <= -12839)
return "T";
if ($asc >= -12838 and $asc <= -12557)
return "W";
if ($asc >= -12556 and $asc <= -11848)
return "X";
if ($asc >= -11847 and $asc <= -11056)
return "Y";
if ($asc >= -11055 and $asc <= -10247)
return "Z";
return null;
}
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