php-汉字拼音首字母工具类

<?<span>php</span><span>/*</span><span>** 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 = $py->getFirstString("周杰伦"); //Z*</span><span>*/</span><span>class</span><span> str2py{    </span><span>private</span> <span>$_pinyins</span> = <span>array</span><span>(        </span>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',<span>    );    </span><span>private</span> <span>$_charset</span> = <span>null</span><span>;    </span><span>/*</span><span>*     * 构造函数, 指定需要的编码 default: utf-8     * 支持utf-8, gb2312     *     * @param unknown_type $charset     </span><span>*/</span>    <span>public</span> <span>function</span> __construct(<span>$charset</span> = 'utf-8'<span>)    {        </span><span>$this</span>->_charset = <span>$charset</span><span>;    }    </span><span>/*</span><span>*     * 中文字符串 substr     *     * @param string $str     * @param int    $start     * @param int    $len     * @return string     </span><span>*/</span>    <span>private</span> <span>function</span> _msubstr(<span>$str</span>, <span>$start</span>, <span>$len</span><span>)    {        </span><span>$start</span> = <span>$start</span> * 2<span>;        </span><span>$len</span> = <span>$len</span> * 2<span>;        </span><span>$strlen</span> = <span>strlen</span>(<span>$str</span><span>);        </span><span>$result</span> = ''<span>;        </span><span>for</span> (<span>$i</span> = 0; <span>$i</span> < <span>$strlen</span>; <span>$i</span>++<span>)        {            </span><span>if</span> (<span>$i</span> >= <span>$start</span> && <span>$i</span> < (<span>$start</span> + <span>$len</span><span>))            {                </span><span>if</span> (<span>ord</span>(<span>substr</span>(<span>$str</span>, <span>$i</span>, 1)) > 129<span>)                {                    </span><span>$result</span> .= <span>substr</span>(<span>$str</span>, <span>$i</span>, 2<span>);                }                </span><span>else</span><span>                {                    </span><span>$result</span> .= <span>substr</span>(<span>$str</span>, <span>$i</span>, 1<span>);                }            }            </span><span>if</span> (<span>ord</span>(<span>substr</span>(<span>$str</span>, <span>$i</span>, 1)) > 129<span>)            {                </span><span>$i</span>++<span>;            }        }        </span><span>return</span> <span>$result</span><span>;    }    </span><span>/*</span><span>*     * 字符串切分为数组 (汉字或者一个字符为单位)     *     * @param string $str     * @return array     </span><span>*/</span>    <span>private</span> <span>function</span> _cutWord(<span>$str</span><span>)    {        </span><span>$words</span> = <span>array</span><span>();        </span><span>while</span> (<span>$str</span> != ""<span>)        {            </span><span>if</span> (<span>$this</span>->_isAscii(<span>$str</span><span>))            {</span><span>/*</span><span> 非中文 </span><span>*/</span>                <span>$words</span>[] = <span>$str</span>[0<span>];                </span><span>$str</span> = <span>substr</span>(<span>$str</span>, <span>strlen</span>(<span>$str</span>[0<span>]));            }            </span><span>else</span><span>            {                </span><span>$word</span> = <span>$this</span>->_msubstr(<span>$str</span>, 0, 1<span>);                </span><span>$words</span>[] = <span>$word</span><span>;                </span><span>$str</span> = <span>substr</span>(<span>$str</span>, <span>strlen</span>(<span>$word</span><span>));            }        }        </span><span>return</span> <span>$words</span><span>;    }    </span><span>/*</span><span>*     * 判断字符是否是ascii字符     *     * @param string $char     * @return bool     </span><span>*/</span>    <span>private</span> <span>function</span> _isAscii(<span>$char</span><span>)    {        </span><span>return</span> ( <span>ord</span>(<span>substr</span>(<span>$char</span>, 0, 1)) < 160<span> );    }    </span><span>/*</span><span>*     * 判断字符串前3个字符是否是ascii字符     *     * @param string $str     * @return bool     </span><span>*/</span>    <span>private</span> <span>function</span> _isAsciis(<span>$str</span><span>)    {        </span><span>$len</span> = <span>strlen</span>(<span>$str</span>) >= 3 ? 3 : 2<span>;        </span><span>$chars</span> = <span>array</span><span>();        </span><span>for</span> (<span>$i</span> = 1; <span>$i</span> < <span>$len</span> - 1; <span>$i</span>++<span>)        {            </span><span>$chars</span>[] = <span>$this</span>->_isAscii(<span>$str</span>[<span>$i</span>]) ? 'yes' : 'no'<span>;        }        </span><span>$result</span> = <span>array_count_values</span>(<span>$chars</span><span>);        </span><span>if</span> (<span>empty</span>(<span>$result</span>['no'<span>]))        {            </span><span>return</span> <span>true</span><span>;        }        </span><span>return</span> <span>false</span><span>;    }    </span><span>/*</span><span>*     * 获取中文字串的拼音首字符     *     * @param string $str     * @return string     </span><span>*/</span>    <span>public</span> <span>function</span> getInitials(<span>$str</span><span>)    {        </span><span>if</span> (<span>empty</span>(<span>$str</span><span>))            </span><span>return</span> ''<span>;        </span><span>if</span> (<span>$this</span>->_isAscii(<span>$str</span>[0]) && <span>$this</span>->_isAsciis(<span>$str</span><span>))        {            </span><span>return</span> <span>$str</span><span>;        }        </span><span>$result</span> = <span>array</span><span>();        </span><span>if</span> (<span>$this</span>->_charset == 'utf-8'<span>)        {            </span><span>$str</span> = <span>iconv</span>('utf-8', 'gb2312', <span>$str</span><span>);        }        </span><span>$words</span> = <span>$this</span>->_cutWord(<span>$str</span><span>);        </span><span>foreach</span> (<span>$words</span> <span>as</span> <span>$word</span><span>)        {            </span><span>if</span> (<span>$this</span>->_isAscii(<span>$word</span><span>))            {</span><span>/*</span><span> 非中文 </span><span>*/</span>                <span>$result</span>[] = <span>$word</span><span>;                </span><span>continue</span><span>;            }            </span><span>$code</span> = <span>ord</span>(<span>substr</span>(<span>$word</span>, 0, 1)) * 1000 + <span>ord</span>(<span>substr</span>(<span>$word</span>, 1, 1<span>));            </span><span>/*</span><span> 获取拼音首字母A--Z </span><span>*/</span>            <span>if</span> ((<span>$i</span> = <span>$this</span>->_search(<span>$code</span>)) != -1<span>)            {                </span><span>$result</span>[] = <span>$this</span>->_pinyins[<span>$i</span><span>];            }        }        </span><span>return</span> <span>strtoupper</span>(<span>implode</span>('', <span>$result</span><span>));    }    </span><span>/*</span><span>*     *  20140624 wangtianbao 获取首字母     *  @param string $str     *  @return string     </span><span>*/</span>    <span>public</span> <span>function</span> getFirstString(<span>$str</span><span>)    {        </span><span>//</span><span>先把中文转换成字母</span>        <span>$new_string</span> = <span>$this</span>->getInitials(<span>$str</span><span>);        </span><span>if</span> (<span>empty</span>(<span>$new_string</span><span>))        {            </span><span>return</span> ''<span>;        }        </span><span>else</span><span>        {            </span><span>return</span> <span>strtoupper</span>(<span>substr</span>(<span>$new_string</span>, 0, 1<span>));        }    }    </span><span>private</span> <span>function</span> _getChar(<span>$ascii</span><span>)    {        </span><span>if</span> (<span>$ascii</span> >= 48 && <span>$ascii</span> <= 57<span>)        {            </span><span>return</span> <span>chr</span>(<span>$ascii</span>);  <span>/*</span><span> 数字 </span><span>*/</span><span>        }        </span><span>elseif</span> (<span>$ascii</span> >= 65 && <span>$ascii</span> <= 90<span>)        {            </span><span>return</span> <span>chr</span>(<span>$ascii</span>);   <span>/*</span><span> A--Z </span><span>*/</span><span>        }        </span><span>elseif</span> (<span>$ascii</span> >= 97 && <span>$ascii</span> <= 122<span>)        {            </span><span>return</span> <span>chr</span>(<span>$ascii</span> - 32); <span>/*</span><span> a--z </span><span>*/</span><span>        }        </span><span>else</span><span>        {            </span><span>r<div>本文来*源gaodai^.ma#com搞#代!码网</div><pre>搞gaodaima代码

eturn ‘-‘; /* 其他 */ } } /** * 查找需要的汉字内码(gb2312) 对应的拼音字符( 二分法 ) * * @param int $code * @return int */ private function _search($code) { $data = array_keys($this->_pinyins); $lower = 0; $upper = sizeof($data) – 1; $middle = (int) round(($lower + $upper) / 2); if ($code < $data[0]) return -1; for (;;) { if ($lower > $upper) { return $data[$lower – 1]; } $tmp = (int) round(($lower + $upper) / 2); if (!isset($data[$tmp])) { return $data[$middle]; } else { $middle = $tmp; } if ($data[$middle] < $code) { $lower = (int) $middle + 1; } else if ($data[$middle] == $code) { return $data[$middle]; } else { $upper = (int) $middle – 1; } } }}

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