PHP实现模糊搜索中文分词

/**
* 模糊搜索中文分词
*/
function decorateSearch_pre($words)
{
$tempArr = str_split($words);
$wordArr = array();
$temp = '';
$count = 0;
$chineseLen = 3;
foreach($tempArr as $word){
if ($count == $chineseLen){
$wordArr[] = $temp;
$temp = '';
$count = 0;
}

// 中文
if(ord($word) > 127){
$temp .= $word;
++$count;
}else if (ord($word) != 32){
$wordArr[] = $word;
}
}

if ($count == $chineseLen){
$wordArr[] = $temp;
}

return '%'.implode($wordArr, '%').'%';
}

/**
* 搜索功能
*/
public function search() {
//获取查找的内容
$search = $_POST['text'];

if($search) {
$search = decorateSearch_pre($search);
$map = [
'content' => ['like', "%{$search}%"]
];

//分页处理
$count = M('ask')->where($map)->count('id');
import('ORG.Util.Page');
$page = new Page($count,15);
$limit = $page->firstRow . ',' .$page->listRows;
$this->result = D('AskView')->order('time DESC')->limit($limit)->where($map)->select();
$this->page = $page->show();
$this->display();
} else {
redirect($_SERVER['HTTP_REFERER']);
}

}