php 统计可读字数

$recordset = array(array("body"=>"<h1 data-role="title">中国人</h1><div data-role="author"></div><div data-role="content">李34团%$长教#@$导我,们.说，<青>年学子应该《参军》。李?!~老【团长--还教】导，我aa们说，接b受t军“队”的管理？和...再！教育。
</div><div data-role="source"></div>"));

foreach ($recordset as $k =>$v){
	if($v["body"] != ""){
		$title = $content = array();
		preg_match("/<h1 data-role="title">(.*)</h1>/U",$v["body"],$title );
		$recordset[$k]["article_title"] = isset($title[1])?$title[1]:"";
		preg_match("/<div data-role="content">(.*)</div>/smU",$v["body"],$content);
		//print_r($content);
		$content = isset($content[1])?preg_replace("/[<(.*?)>|\\r|\\n]/", "", $content[1]):"";
		preg_match_all("/[x{4E00}-x{9FA5}]+/u",$content,$match);
		$clean = implode($match[0]);
		preg_match_all("/[dw]+/",$content,$match);
		$clean .= implode($match[0]);
		//echo $clean;
		$recordset[$k]["word_count"] = mb_strlen($clean,"UTF-8");
		unset($recordset[$k]["body"]);
	}	
}
			
			
print_r($recordset);