thinkphp中U方法按路由规则生成url的方法

//更改模块配置文件'URL_ROUTER_ON'   => true, 'URL_ROUTE_RULES'=>[]//编写路由优化

if(C('URL_ROUTE_RULES')){ foreach (C('URL_ROUTE_RULES') as $rule=>$real) {  if(strpos($url, $real)!==false){   $url = str_replace($real, $rule, $url);   preg_match("///(/w+)/.php//(/w+)/", $url, $match);   if(isset($match[1]) && isset($match[2]) && $match[1][0]==$match[2][0]){    $url = preg_replace("///(/w+)/.php/", '', $url);   }elseif(strpos($url, 'index.php')!==false){    $url = str_replace("/index.php", '', $url);   }else{    $url = str_replace(".php", '', $url);   }   preg_match_all("/(:/w+)/", $rule, $matches);   foreach ((array)$matches[1] as $match) {    $url = str_replace($match . '/', '', $url);    $url = str_replace(substr($match, 1) . '/', '', $url);   }  }  } }