【收藏】php生成中文汉字首拼音实用类(1)

1、在实际项目中，我们可能要用到把汉字生成拼音存到数据库中，比如新闻标题 生成拼音做url，或者把分类项取首拼保存方便查询，应用场景很多。我现在 做的项目是把城市分站生成首拼音做二级域名，现在是我正在用的类，分享给 大家。代码如下复制代码v?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)* 中文字符串：返回拼音首字符* 中英混合串：返回拼音首字符和英文eg .abc123 => abc123eg.湖南=> HN eg.我 i 我 j => WIWJ*/eg.$py = new str2 PY();$result = $p y->get In itia

2、ls('周杰伦');/获取首字母$result = $p y->getFirstStri ng('abc'); $resutl = $p y->getFirstStri ng("/A一聚教程");/yclass str2 py P rivate $_pinyins = array( => 'A',=> 'B',=> C,=> 'D',=> 'E',=> 'F',=> 'G',=> '

3、;H',=> 'J',=> 'K',=> 'L',=> 'M',=> 'N',=> 'O',=> 卩'，=> Q,=> 'R',=> 'S', => T,=> W,=> 'X',=> 'Y', => 'Z',)；p rivate $_charset = n ull;/*构造函数，指定需要的编码default: utf

4、-8* 支持 utf-8, gb2312* p aram unknown_type $charset*/p ublic fun cti on _con struct($charset = 'utf-8') $this->_charset = $charset;/*中文字符串substr$start $len* p aram stri ng $str* p aram int* p aram int* return string*/p rivate fun cti on _msubstr($str, $start, $le n) $start = $start * 2;$le

5、 n = $le n * 2;$strle n = strle n($str);$result =''for ($i = 0; $i < $strle n; $i+) if ($i >= $start && $i < ($start + $le n) if (ord(substr($str, $i, 1) > 129) $result .= substr($str, $i, 2); else$result .= substr($str, $i, 1);if (ord(substr($str, $i, 1) > 129)$i+;ret

6、ur n $result;/*字符串切分为数组（汉字或者一个字符为单位）* p aram stri ng $str* return array*/p rivate fun cti on _cutWord($str) $words = arrayO; while ($str !="")if ($this->_isAscii($str) /*非中文*/$words = $str0;$str = substr($str, strle n($strO); else$word = $this->_msubstr($str, 0, 1);$words = $word;$st

7、r = substr($str, strle n($word);return $words;/*判断字符是否是ascii字符* p aram stri ng $char* retu rn bool*/p rivate fun cti on _isAscii($char)return ( ord(substr($char, 0, 1) < 160 );/*判断字符串前3个字符是否是ascii字符* p aram stri ng $str* retu rn bool*/p rivate fun cti on _isAsciis($str) "$len = strle n( $str

8、) >= 3 ? 3 : 2; $chars = array();for ($i = 1; $i < $len - 1; $i+)$chars = $this->_isAscii($str$i) ? 'yes':'no'$result = array_co un t_values($chars); if (emp ty($result' no')return true;return false;/*获取中文字串的拼音首字符* p aram stri ng $str* return string*/p ublic fun cti

9、on get In itials($str) if (emp ty($str)return ”；if ($this->_isAscii($strO) && $this->_isAsciis($str) return $str;$result = array();if ($this->_charset = 'utf-8') $str = ico nv('utf-8', 'gb2312', $str);$words = $this->_cutWord($str); foreach ($words as $wor

10、d)if ($this->_isAscii($word)/* 非中文*/$result = $word; con ti nue;$code = ord(substr($word, 0, 1) * 1000 +ord(substr($word, 1, 1);/*获取拼音首字母A-Z */if ($i = $this->_search($code) != -1) $result = $this->_pi nyi ns$i;return strto upp er(i mpl ode(”，$result);/*20140624 wa ngtia nbao 获取首字母 p aram s

11、tri ng $strreturn stri ng*/p ublic fun cti on getFirstStri ng($str) /先把中文转换成字母$n ew_stri ng = $this->getI nitials($str);if (emp ty($ new_stri ng) "return ”; elseretu rn strto upp er(substr($ new_stn ng, 0, 1);p rivate fun cti on _getChar($ascii) if ($ascii >= 48 && $ascii <= 57

12、) retur n chr($ascii);/* 数字*/elseif ($ascii >= 65 && $ascii <= 90)retur n chr($ascii);/* A-Z */elseif ($ascii >= 97 && $ascii <= 122)return chr($ascii - 32); /* a-z */ elsereturn '-' /*其他*/*查找需要的汉字内码（gb2312）对应的拼音字符（二分法）* p aram int $code* return int*/p rivate fun

13、cti on _search($code) $data = array_keys($this->_pi nyi ns);$lower = 0;$upper = sizeof($data) - 1;$middle = (i nt) ro un d($lower + $upper) / 2); if ($code < $data0)return -1;for (if ($lower > $upper) return $data$lower - 1;$tmp = (i nt) ro un d($lower + $upper) / 2); if (!isset($data$tm p)return