PHP提取中文首字母

从别人程序中扒拉出来的不是原创。Dzender的代码学习用

 

PHP代码

<?
function pykey( $py_key)
{
    $pinyin = 65536 + pys($py_key);
    if ( 45217 <= $pinyin && $pinyin <= 45252 )
    {
        $zimu = "A";
        return $zimu;
    }
    if ( 45253 <= $pinyin && $pinyin <= 45760 )
    {
        $zimu = "B";
        return $zimu;
    }
    if ( 45761 <= $pinyin && $pinyin <= 46317 )
    {
        $zimu = "C";
        return $zimu;
    }
    if ( 46318 <= $pinyin && $pinyin <= 46825 )
    {
        $zimu = "D";
        return $zimu;
    }
    if ( 46826 <= $pinyin && $pinyin <= 47009 )
    {
        $zimu = "E";
        return $zimu;
    }
    if ( 47010 <= $pinyin && $pinyin <= 47296 )
    {
        $zimu = "F";
        return $zimu;
    }
    if ( 47297 <= $pinyin && $pinyin <= 47613 )
    {
        $zimu = "G";
        return $zimu;
    }
    if ( 47614 <= $pinyin && $pinyin <= 48118 )
    {
        $zimu = "H";
        return $zimu;
    }
    if ( 48119 <= $pinyin && $pinyin <= 49061 )
    {
        $zimu = "J";
        return $zimu;
    }
    if ( 49062 <= $pinyin && $pinyin <= 49323 )
    {
        $zimu = "K";
        return $zimu;
    }
    if ( 49324 <= $pinyin && $pinyin <= 49895 )
    {
        $zimu = "L";
        return $zimu;
    }
    if ( 49896 <= $pinyin && $pinyin <= 50370 )
    {
        $zimu = "M";
        return $zimu;
    }
    if ( 50371 <= $pinyin && $pinyin <= 50613 )
    {
        $zimu = "N";
        return $zimu;
    }
    if ( 50614 <= $pinyin && $pinyin <= 50621 )
    {
        $zimu = "O";
        return $zimu;
    }
    if ( 50622 <= $pinyin && $pinyin <= 50905 )
    {
        $zimu = "P";
        return $zimu;
    }
    if ( 50906 <= $pinyin && $pinyin <= 51386 )
    {
        $zimu = "Q";
        return $zimu;
    }
    if ( 51387 <= $pinyin && $pinyin <= 51445 )
    {
        $zimu = "R";
        return $zimu;
    }
    if ( 51446 <= $pinyin && $pinyin <= 52217 )
    {
        $zimu = "S";
        return $zimu;
    }
    if ( 52218 <= $pinyin && $pinyin <= 52697 )
    {
        $zimu = "T";
        return $zimu;
    }
    if ( 52698 <= $pinyin && $pinyin <= 52979 )
    {
        $zimu = "W";
        return $zimu;
    }
    if ( 52980 <= $pinyin && $pinyin <= 53640 )
    {
        $zimu = "X";
        return $zimu;
    }
    if ( 53689 <= $pinyin && $pinyin <= 54480 )
    {
        $zimu = "Y";
        return $zimu;
    }
    if ( 54481 <= $pinyin && $pinyin <= 62289 )
    {
        $zimu = "Z";
        return $zimu;
    }
    $zimu = $py_key;
    return $zimu;
}
function pys( $pysa )
{
    $pyi = "";
    $i= 0;
    for ( ; $i < strlen( $pysa ); $i++)
    {
        $_obfuscate_8w= ord( substr( $pysa,$i,1) );
        if ( 160 < $_obfuscate_8w)
        {
            $_obfuscate_Bw = ord( substr( $pysa, $i++, 1 ) );
            $_obfuscate_8w = $_obfuscate_8w * 256 + $_obfuscate_Bw - 65536;
        }
        $pyi.= $_obfuscate_8w;
    }
    return $pyi;
}
$letter = pykey("中华人民共和国");
echo $letter;
?>