<?php
function SplitRMM($str = "") {
    if ($str != "") $this->SetSource(trim($str));
    if ($this->SourceString == "") return "";
    //对文本进行粗分
    $this->SourceString = $this->ReviseString($this->SourceString);
    //对特定文本进行分离
    $spwords = explode(" ", $this->SourceString);
    $spLen = count($spwords);
    $spc = $this->SplitChar;
    for ($i = ($spLen - 1); $i >= 0; $i--) {
        if (trim($spwords[$i]) == "") continue;
        if ($this->NotGBK($spwords[$i])) {
            if (ereg("[^0-9.+-]", $spwords[$i])) {
                $this->ResultString = $spwords[$i] . $spc . $this->ResultString;
            } else {
                $nextword = "";
                @$nextword = substr($this->ResultString, 0, strpos($this->ResultString, " "));
                if (ereg("^" . $this->CommonUnit, $nextword)) {
                    $this->ResultString = $spwords[$i] . $this->ResultString;
                } else {
                    $this->ResultString = $spwords[$i] . $spc . $this->ResultString;
                }
            }
        } else {
            $c = $spwords[$i][0] . $spwords[$i][1];
            $n = hexdec(bin2hex($c));
            if ($c == "《") //书名
            {
                $this->ResultString = $spwords[$i] . $spc . $this->ResultString;
            } else if ($n > 0xA13F && $n < 0xAA40) //标点符号
            {
                $this->ResultString = $spwords[$i] . $spc . $this->ResultString;
            } else
            //正常短句
            {
                if (strlen($spwords[$i]) <= $this->SplitLen) {
                    //如果结束符为特殊分割词，分离处理
                    if (ereg($this->EspecialChar . "\$", $spwords[$i], $regs)) {
                        $spwords[$i] = ereg_replace($regs[0] . "\$", "", $spwords[$i]) . $spc . $regs[0];
                    }
                    //是否为常用单位
                    if (!ereg("^" . $this->CommonUnit, $spwords[$i]) || $i == 0) {
                        $this->ResultString = $spwords[$i] . $spc . $this->ResultString;
                    } else {
                        $this->ResultString = $spwords[$i - 1] . $spwords[$i] . $spc . $this->ResultString;
                        $i--;
                    }
                } else {
                    $this->ResultString = $this->RunRMM($spwords[$i]) . $spc . $this->ResultString;
                }
            }
        }
    }
    return $this->ResultString;
}

本文地址：http://www.phprm.com/code/ddf7b919924cc013f8c5bf8ec661c94b.html

转载随意，但请附上文章地址:-)