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