php 获得汉字拼音首字母的函数_php技巧

php 获得汉字拼音首字母的函数，大家可以自行测试。

php获取汉字拼音的第一个字母

function getinitial($str)
{
$asc=ord(substr($str,0,1));
if ($asc{
if ($asc>=48 && $ascreturn '1'; //数字
}elseif ($asc>=65 && $ascreturn chr($asc); // A--Z
}elseif ($asc>=97 && $ascreturn chr($asc-32); // a--z
}else{
return '~'; //其他
}
}
else //中文
{
$asc=$asc*1000 ord(substr($str,1,1));
//获取拼音首字母A--Z
if ($asc>=176161 && $ascreturn 'A';
}elseif ($asc>=176197 && $ascreturn 'B';
}elseif ($asc>=178193 && $ascreturn 'C';
}elseif ($asc>=180238 && $ascreturn 'D';
}elseif ($asc>=182234 && $ascreturn 'E';
}elseif ($asc>=183162 && $ascreturn 'F';
}elseif ($asc>=184193 && $ascreturn 'G';
}elseif ($asc>=185254 && $ascreturn 'H';
}elseif ($asc>=187247 && $ascreturn 'J';
}elseif ($asc>=191166 && $ascreturn 'K';
}elseif ($asc>=192172 && $ascreturn 'L';
}elseif ($asc>=194232 && $ascreturn 'M';
}elseif ($asc>=196195 && $ascreturn 'N';
}elseif ($asc>=197182 && $ascreturn 'O';
}elseif ($asc>=197190 && $ascreturn 'P';
}elseif ($asc>=198218 && $ascreturn 'Q';
}elseif ($asc>=200187 && $ascreturn 'R';
}elseif ($asc>=200246 && $ascreturn 'S';
}elseif ($asc>=203250 && $ascreturn 'T';
}elseif ($asc>=205218 && $ascreturn 'W';
}elseif ($asc>=206244 && $ascreturn 'X';
}elseif ($asc>=209185 && $ascreturn 'Y';
}elseif ($asc>=212209){
return 'Z';
}else{
return '~';
}
}
}
echo getinitial("脚本");
?>

function getfirstchar($s0){
$firstchar_ord=ord(strtoupper($s0{0}));
if (($firstchar_ord>=65 and $firstchar_ord=48 and $firstchar_ord$s=iconv("UTF-8","gb2312", $s0);
$asc=ord($s{0})*256 ord($s{1})-65536;
if($asc>=-20319 and $ascif($asc>=-20283 and $ascif($asc>=-19775 and $ascif($asc>=-19218 and $ascif($asc>=-18710 and $ascif($asc>=-18526 and $ascif($asc>=-18239 and $ascif($asc>=-17922 and $ascif($asc>=-17417 and $ascif($asc>=-16474 and $ascif($asc>=-16212 and $ascif($asc>=-15640 and $ascif($asc>=-15165 and $ascif($asc>=-14922 and $ascif($asc>=-14914 and $ascif($asc>=-14630 and $ascif($asc>=-14149 and $ascif($asc>=-14090 and $ascif($asc>=-13318 and $ascif($asc>=-12838 and $ascif($asc>=-12556 and $ascif($asc>=-11847 and $ascif($asc>=-11055 and $ascreturn null;
}
echo getfirstchar("哈哈");