php-汉字拼音首字母工具类，php-汉字工具类

php-汉字拼音首字母工具类，php-汉字工具类

php


/**
* 汉字拼音首字母工具类
*  注： 英文的字串：不变返回(包括数字)    eg .abc123 => abc123
*      中文字符串：返回拼音首字符        eg. 测试字符串 => CSZFC
*      中英混合串: 返回拼音首字符和英文   eg. 我i我j => WIWJ
*  eg.
*  $py = new str2PY();
*  
*  $result = $py->getInitials('周杰伦');
*
*  //获取首字母
*  $result = $py->getFirstString('abc');  //A
*  $resutl = $py->getFirstString("周杰伦"); //Z
*
*/

class str2py
{

    private $_pinyins = array(
        176161 => 'A',
        176197 => 'B',
        178193 => 'C',
        180238 => 'D',
        182234 => 'E',
        183162 => 'F',
        184193 => 'G',
        185254 => 'H',
        187247 => 'J',
        191166 => 'K',
        192172 => 'L',
        194232 => 'M',
        196195 => 'N',
        197182 => 'O',
        197190 => 'P',
        198218 => 'Q',
        200187 => 'R',
        200246 => 'S',
        203250 => 'T',
        205218 => 'W',
        206244 => 'X',
        209185 => 'Y',
        212209 => 'Z',
    );
    private $_charset = null;

    /**
     * 构造函数, 指定需要的编码 default: utf-8
     * 支持utf-8, gb2312
     *
     * @param unknown_type $charset
     */
    public function __construct($charset = 'utf-8')
    {
        $this->_charset = $charset;
    }

    /**
     * 中文字符串 substr
     *
     * @param string $str
     * @param int    $start
     * @param int    $len
     * @return string
     */
    private function _msubstr($str, $start, $len)
    {
        $start = $start * 2;
        $len = $len * 2;
        $strlen = strlen($str);
        $result = '';
        for ($i = 0; $i $strlen