<?php
header("Content-type:text/html;charset=utf-8");
$str = "http://www.bfw.wiki/架构专题/111/如何成为架构高手.html";
echo preg_replace("/([\x{4e00}-\x{9fa5}]+)/ue",'urlencode("$1")',$str);
// preg_match_all("/([\x{4e00}-\x{9fa5}]+)/u",$str,$match);
// var_dump($match);
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