<?php
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class SplitWord
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{
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var $TagDic = Array();
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var $RankDic = Array();
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var $OneNameDic = Array();
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var $TwoNameDic = Array();
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var $SourceString = '';
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var $ResultString = '';
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var $SplitChar = ','; //分隔符
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var $SplitLen = 4; //保留词长度
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var $EspecialChar = "和|的|是";
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var $NewWordLimit = "在|的|与|或|就|你|我|他|她|有|了|是|其|能|对|地";
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var $CommonUnit = "年|月|日|时|分|秒|点|元|百|千|万|亿|位|辆";
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var $CnNumber = "％|＋|－|０|１|２|３|４|５|６|７|８|９|．";
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var $CnSgNum = "一|二|三|四|五|六|七|八|九|十|百|千|万|亿|数";
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var $MaxLen = 13; //词典最大 7 中文字，这里的数值为字节数组的最大索引
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var $MinLen = 3; //最小 2 中文字，这里的数值为字节数组的最大索引
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var $CnTwoName = "端木 南宫 谯笪 轩辕 令狐 钟离 闾丘 长孙 鲜于 宇文 司徒 司空 上官 欧阳 公孙 西门 东门 左丘 东郭 呼延 慕容 司马 夏侯 诸葛 东方 赫连 皇甫 尉迟 申屠";
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var $CnOneName = "赵钱孙李周吴郑王冯陈褚卫蒋沈韩杨朱秦尤许何吕施张孔曹严华金魏陶姜戚谢邹喻柏水窦章云苏潘葛奚范彭郎鲁韦昌马苗凤花方俞任袁柳酆鲍史唐费廉岑薛雷贺倪汤滕殷罗毕郝邬安常乐于时傅皮卡齐康伍余元卜顾孟平黄穆萧尹姚邵堪汪祁毛禹狄米贝明臧计伏成戴谈宋茅庞熊纪舒屈项祝董粱杜阮蓝闵席季麻强贾路娄危江童颜郭梅盛林刁钟徐邱骆高夏蔡田樊胡凌霍虞万支柯咎管卢莫经房裘缪干解应宗宣丁贲邓郁单杭洪包诸左石崔吉钮龚程嵇邢滑裴陆荣翁荀羊於惠甄魏加封芮羿储靳汲邴糜松井段富巫乌焦巴弓牧隗谷车侯宓蓬全郗班仰秋仲伊宫宁仇栾暴甘钭厉戎祖武符刘姜詹束龙叶幸司韶郜黎蓟薄印宿白怀蒲台从鄂索咸籍赖卓蔺屠蒙池乔阴郁胥能苍双闻莘党翟谭贡劳逄姬申扶堵冉宰郦雍郤璩桑桂濮牛寿通边扈燕冀郏浦尚农温别庄晏柴翟阎充慕连茹习宦艾鱼容向古易慎戈廖庚终暨居衡步都耿满弘匡国文寇广禄阙东殴殳沃利蔚越夔隆师巩厍聂晁勾敖融冷訾辛阚那简饶空曾沙须丰巢关蒯相查后江游竺";
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//------------------------------
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//php4构造函数
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//------------------------------
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function SplitWord(){
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$this->__construct();
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}
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//------------------------------
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//php5构造函数
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//------------------------------
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function __construct(){
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//载入姓氏词典
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for($i=0;$i<strlen($this->CnOneName);$i++)
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{
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$this->OneNameDic[$this->CnOneName[$i].$this->CnOneName[$i+1]] = 1;
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$i++;
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}
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$twoname = explode(" ",$this->CnTwoName);
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foreach($twoname as $n){ $this->TwoNameDic[$n] = 1; }
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unset($twoname);
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unset($this->CnOneName);
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unset($this->CnTwoName);
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//高级分词，预先载入词典以提分词高速度
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$dicfile = dirname(__FILE__)."/keyword.csv";
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$fp = fopen($dicfile,'r');
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while($line = fgets($fp,256)){
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$ws = @explode(' ',$line);
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$this->TagDic[$ws[0]] = $ws[1];
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$this->RankDic[strlen($ws[0])][$ws[0]] = $ws[2];
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}
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fclose($fp);
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}
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//--------------------------
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//析放资源
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//--------------------------
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function Clear()
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{
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@fclose($this->QuickDic);
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}
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//----------------------------
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//设置源字符串
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//----------------------------
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function SetSource($str){
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$this->SourceString = trim($this->ReviseString($str));
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$this->ResultString = "";
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}
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//-----------------------------
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//检查字符串是否不存在中文
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//-----------------------------
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function NotGBK($str)
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{
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if($str=="") return "";
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//因为粗分的时候已经处理,因此不必要检查所的字符
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if( ord($str[0])>0x80 ) return false;
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else return true;
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}
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//-----------------------------
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//RMM分词算法
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//-----------------------------
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function SplitRMM($str=""){
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if($str!="") $this->SetSource(trim($str));
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if($this->SourceString=="") return "";
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//对文本进行粗分
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$this->SourceString = $this->ReviseString($this->SourceString);
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//对特定文本进行分离
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$spwords = explode(" ",$this->SourceString);
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$spLen = count($spwords);
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$spc = $this->SplitChar;
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for($i=($spLen-1);$i>=0;$i--){
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if(trim($spwords[$i])=="") continue;
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if($this->NotGBK($spwords[$i])){
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if(preg_match("/[^0-9\.\+\-]/",$spwords[$i]))
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{ $this->ResultString = $spwords[$i].$spc.$this->ResultString; }
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else
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{
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$nextword = "";
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@$nextword = substr($this->ResultString,0,strpos($this->ResultString," "));
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if(preg_match("/^".$this->CommonUnit.'/',$nextword)){
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$this->ResultString = $spwords[$i].$this->ResultString;
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}else{
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$this->ResultString = $spwords[$i].$spc.$this->ResultString;
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}
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}
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}
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else
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{
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$c = $spwords[$i][0].$spwords[$i][1];
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$n = hexdec(bin2hex($c));
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if($c=="《") //书名
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{ $this->ResultString = $spwords[$i].$spc.$this->ResultString; }
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else if($n>0xA13F && $n < 0xAA40) //标点符号
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{ $this->ResultString = $spwords[$i].$spc.$this->ResultString; }
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else //正常短句
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{
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if(strlen($spwords[$i]) <= $this->SplitLen)
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{
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//如果结束符为特殊分割词，分离处理
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if(preg_match('/'.$this->EspecialChar."$/",$spwords[$i],$regs)){
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$spwords[$i] = preg_replace('/'.$regs[0]."$/","",$spwords[$i]).$spc.$regs[0];
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}
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//是否为常用单位
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if(!preg_match("/^".$this->CommonUnit.'/',$spwords[$i]) || $i==0){
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$this->ResultString = $spwords[$i].$spc.$this->ResultString;
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}else{
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$this->ResultString = $spwords[$i-1].$spwords[$i].$spc.$this->ResultString;
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$i--;
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}
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}
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else
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{
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$this->ResultString = $this->RunRMM($spwords[$i]).$spc.$this->ResultString;
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}
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}
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}
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}
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return $this->ResultString;
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}
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function getkeyword($str){
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$keyword=$this->SplitRMM($str);
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$keyarr=explode($this->SplitChar,$keyword);
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if(is_array($keyarr)){
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$keywordarr=array();
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foreach($keyarr as $key=>$v){
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if(strlen($v)>2){
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$keywordarr[]=$v;
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if(in_array($v,$keywordarr)){
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$keywordarr2[$v]++;
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}else{
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$keywordarr2[$v]=1;
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$keywordarr[]=$v;
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}
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}
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}
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}
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$keywordarr3=array();
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foreach($keywordarr2 as $key=>$v){
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if($keywordarr3[$v]!=""){
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if($keywordarr3[$v+1]!=""){
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if($keywordarr3[$v+2]!=""){
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if($keywordarr3[$v+3]!=""){
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if($keywordarr3[$v+4]!=""){
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}else{
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$keywordarr3[$v+4]=$key;
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}
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}else{
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$keywordarr3[$v+3]=$key;
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}
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}else{
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$keywordarr3[$v+2]=$key;
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}
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}else{
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$keywordarr3[$v+1]=$key;
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}
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}else{
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$keywordarr3[$v]=$key;
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}
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}
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krsort($keywordarr3);
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return $keywordarr3;
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}
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function getarray($array,$i){
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if($array[$i]!=""){
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return $this->getarray($array,$i++);
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}else{
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return $i;
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}
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}
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//对全中文字符串进行逆向匹配方式分解
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function RunRMM($str)
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{
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$spc = $this->SplitChar;
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$spLen = strlen($str);
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$rsStr = "";
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$okWord = "";
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$tmpWord = "";
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$WordArray = Array();
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//逆向字典匹配
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for($i=($spLen-1);$i>=0;)
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{
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//当i达到最小可能词的时候
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if($i<=$this->MinLen){
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if($i==1){
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$WordArray[] = substr($str,0,2);
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//echo "Min 1： ".substr($str,0,2)."<br>";
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}else
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{
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$w = substr($str,0,$this->MinLen+1);
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if($this->IsWord($w)){
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$WordArray[] = $w;
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}else{
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$WordArray[] = substr($str,2,2);
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$WordArray[] = substr($str,0,2);
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//echo "Min 2-2： ".substr($str,0,2).substr($str,2,2)."<br>";
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}
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}
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$i = -1; break;
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}
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//分析在最小词以上时的情况
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if($i>=$this->MaxLen) $maxPos = $this->MaxLen;
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else $maxPos = $i;
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$isMatch = false;
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for($j=$maxPos;$j>=0;$j=$j-2){
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$w = substr($str,$i-$j,$j+1);
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if($this->IsWord($w)){
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$WordArray[] = $w;
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//echo "EG： ".$w." $str $i $j<br>";
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$i = $i-$j-1;
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$isMatch = true;
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break;
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}
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}
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if(!$isMatch){
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if($i>1) {
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$WordArray[] = $str[$i-1].$str[$i];
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//echo "NOT EG： ".$w."<br>";
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$i = $i-2;
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}
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}
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}//End For
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$rsStr = $this->ParOther($WordArray);
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return $rsStr;
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}
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//
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//进行名字识别和其它数词识别
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//
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function ParOther($WordArray)
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{
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$wlen = count($WordArray)-1;
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$rsStr = "";
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$spc = $this->SplitChar;
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for($i=$wlen;$i>=0;$i--)
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{
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//数量词
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if(preg_match('/'.$this->CnSgNum.'/',$WordArray[$i])){
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$rsStr .= $spc.$WordArray[$i];
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if($i>0 && preg_match("/^".$this->CommonUnit.'/',$WordArray[$i-1]))
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{ $rsStr .= $WordArray[$i-1]; $i--; }
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else{
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while($i>0 && preg_match($this->CnSgNum.'/',$WordArray[$i-1]))
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{ $rsStr .= $WordArray[$i-1]; $i--; }
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}
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continue;
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}
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//双字姓
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if(strlen($WordArray[$i])==4 && isset($this->TwoNameDic[$WordArray[$i]]))
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{
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$rsStr .= $spc.$WordArray[$i];
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if($i>0&&strlen($WordArray[$i-1])==2){
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$rsStr .= $WordArray[$i-1];$i--;
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if($i>0&&strlen($WordArray[$i-1])==2){ $rsStr .= $WordArray[$i-1];$i--; }
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}
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}
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//单字姓
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else if(strlen($WordArray[$i])==2 && isset($this->OneNameDic[$WordArray[$i]]))
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{
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$rsStr .= $spc.$WordArray[$i];
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if($i>0&&strlen($WordArray[$i-1])==2){
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$rsStr .= $WordArray[$i-1];$i--;
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if($i>0 && strlen($WordArray[$i-1])==2){ $rsStr .= $WordArray[$i-1];$i--; }
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}
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}
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//普通词汇
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else{
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$rsStr .= $spc.$WordArray[$i];
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}
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}
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//返回本段分词结果
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$rsStr = preg_replace("/^".$spc."/","",$rsStr);
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return $rsStr;
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}
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//---------------------------------
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//判断词典里是否存在某个词
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//---------------------------------
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function IsWord($okWord){
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$slen = strlen($okWord);
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if($slen > $this->MaxLen) return false;
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else return isset($this->RankDic[$slen][$okWord]);
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}
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//------------------------------
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//整理字符串（对标点符号，中英文混排等初步处理）
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//------------------------------
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function ReviseString($str)
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{
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$spc = $this->SplitChar;
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$slen = strlen($str);
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if($slen==0) return '';
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$okstr = '';
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$prechar = 0; // 0-空白 1-英文 2-中文 3-符号
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for($i=0;$i<$slen;$i++){
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if(ord($str[$i]) < 0x81)
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{
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//英文的空白符号
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if(ord($str[$i]) < 33){
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if($prechar!=0&&$str[$i]!="\r"&&$str[$i]!="\n") $okstr .= $spc;
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$prechar=0;
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continue;
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}else if(preg_match("/[^0-9a-zA-Z@\.%#:/\\&_-]/",$str[$i]))
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{
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if($prechar==0)
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{ $okstr .= $str[$i]; $prechar=3;}
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else
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{ $okstr .= $spc.$str[$i]; $prechar=3;}
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}else
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{
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if($prechar==2||$prechar==3)
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{ $okstr .= $spc.$str[$i]; $prechar=1;}
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else
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{
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if(preg_match("/@#%:",$str[$i].'/')){ $okstr .= $str[$i]; $prechar=3; }
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else { $okstr .= $str[$i]; $prechar=1; }
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}
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}
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}
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else{
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//如果上一个字符为非中文和非空格，则加一个空格
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if($prechar!=0 && $prechar!=2) $okstr .= $spc;
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//如果中文字符
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if(isset($str[$i+1])){
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$c = $str[$i].$str[$i+1];
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if(preg_match('/'.$this->CnNumber.'/',$c))
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{ $okstr .= $this->GetAlabNum($c); $prechar = 2; $i++; continue; }
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$n = hexdec(bin2hex($c));
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if($n>0xA13F && $n < 0xAA40)
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{
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if($c=="《"){
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if($prechar!=0) $okstr .= $spc." 《";
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else $okstr .= " 《";
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$prechar = 2;
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}
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else if($c=="》"){
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$okstr .= "》 ";
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$prechar = 3;
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}
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else{
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if($prechar!=0) $okstr .= $spc.$c;
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else $okstr .= $c;
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$prechar = 3;
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}
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}
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else{
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$okstr .= $c;
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$prechar = 2;
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}
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$i++;
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}
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}//中文字符
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}//结束循环
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return $okstr;
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}
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//-----------------------------------------
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//尝试识别新词，字符串参数为已经分词处理的串
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//----------------------------------------
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function FindNewWord($spwords,$maxlen=6)
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{
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$okstr = '';
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$ws = explode(' ',$spwords);
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$newword = '';
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$nws = '';
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foreach($ws as $w)
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{
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$w = trim($w);
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if(strlen($w)==2 && !preg_match("/[0-9a-zA-Z]/",$w) && !preg_match("/".$this->NewWordLimit."/",$w) )
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{ $newword .= " ".$w;}
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else
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{
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if($newword!="")
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{
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$nw = str_replace(' ','',$newword);
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if(strlen($nw)>2)
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{
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if(strlen($nw) <= $maxlen){ $okstr .= ' '.$nw; $nws[$nw] = 0; }
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else $okstr .= ' '.$newword;
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}
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else
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{ $okstr .= ' '.$newword; }
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$newword = '';
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}
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$okstr .= ' '.$w;
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}
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}
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if($newword!="") $okstr .= $newword;
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$okstr = preg_replace("/ {1,}/"," ",$okstr);
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if(is_array($nws))
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{
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$this->m_nws = $nws;
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foreach($nws as $k=>$w)
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{
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$w = "";
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for($i=0;$i<strlen($k);$i++){
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if( ord($k[$i]) > 0x80 ){
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$w .= " ".$k[$i];
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if(isset($k[$i+1])){ $w .= $k[$i+1]; $i++;}
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}
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else
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$w .= " ".$k[$i];
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$w .= " ";
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}
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$w = preg_replace("/ {1,}/"," ",$w);
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$okstr = str_replace($w," ".$k." ",$okstr);
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$okstr = str_replace($k." "," ".$k." ",$okstr);
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$okstr = str_replace(" ".$k," ".$k." ",$okstr);
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}
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}
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return $okstr;
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}
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//----------------------------------------------
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//除去字串中的重复词，生成索引字符串，字符串参数为已经分词处理的串
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//--------------------------------------------------
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function GetIndexText($okstr,$ilen=-1)
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{
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if($okstr=="") return "";
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$ws = explode(" ",$okstr);
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$okstr = "";
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$wks = "";
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foreach($ws as $w)
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{
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$w = trim($w);
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//排除小于2的字符
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if(strlen($w)<2 || strlen($w)>6) continue;
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//排除数字或日期
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if(!preg_match("/[^0-9:-]/",$w)) continue;
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if(strlen($w)==2&&ord($w[0])>0x80) continue;
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if(isset($wks[$w])) $wks[$w]++;
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else $wks[$w] = 1;
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}
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if(is_array($wks))
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{
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arsort($wks);
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if($ilen==-1)
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{ foreach($wks as $w=>$v) $okstr .= $w." "; }
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else
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{
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foreach($wks as $w=>$v){
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if((strlen($okstr)+strlen($w)+1)<$ilen) $okstr .= $w." ";
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else break;
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}
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}
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}
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return trim($okstr);
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}
|
//
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//把全角数字转为半角数字
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//
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function GetAlabNum($fnum)
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{
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$nums = array("０","１","２","３","４","５","６","７","８","９","＋","－","％","．");
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$fnums = "0123456789+-%.";
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for($i=0;$i<count($nums);$i++){
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if($nums[$i]==$fnum) return $fnums[$i];
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}
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return $fnum;
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}
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}//End Class
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?>
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