实现汉字或英文按照首字母查找

来源：互联网发布：淘宝店铺怎样刷粉丝编辑：程序博客网时间：2024/05/21 21:24
 /**     *     */function getfirstchar($s0){                if($s0[0]=='I' || $s[0]=='i'){                    return "I";                }elseif($s0[0]=='U' || $s[0]=='u'){                    return 'U';                }elseif($s0[0]=='V' || $s[0]=='v'){                    return 'V';                }else{$fchar = ord($s0{0});if($fchar >= ord("A") and $fchar <= ord("z") )return strtoupper($s0{0});$s1 = iconv("UTF-8","gb2312", $s0);$s2 = iconv("gb2312","UTF-8", $s1);if($s2 == $s0){$s = $s1;}else{$s = $s0;}$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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