�组保留的标签 余下为需要删除的标签
                unset($oldtag[$key]);
            }
        }
    }
    

    if (!empty($oldtag)) {
        $tagids = array();
        foreach ($oldtag as $tagid => $tagname) {
            $tagids[] = $tagid;
        }

        well_oldtag_delete($tagids, $tid);
    }

    $r = well_tag_process($tid, $fid, $create_tag, $tagarr);

    

    return $r;
}

// 删除标签和绑定的主题
function well_oldtag_delete($tagids, $tid)
{
    

    $pagesize = count($tagids);
    $arrlist = well_tag_find_by_tagids($tagids, 1, $pagesize);

    

    $delete_tagids = array(); // 删除
    $tagids = array();
    $n = 0;
    foreach ($arrlist as $val) {
        ++$n;
        
        if (1 == $val['count']) {
            // 只有一个主题
            $delete_tagids[] = $val['tagid'];
            
        } else {
            $tagids[] = $val['tagid'];
        }
        
    }

    

    !empty($delete_tagids) and well_tag_delete($delete_tagids);

    $arlist = well_tag_thread_find_by_tid($tid, 1, $n);
    if ($arlist) {
        $ids = array();
        foreach ($arlist as $val) $ids[] = $val['id'];

        well_tag_thread_delete($ids);
    }

    !empty($tagids) and well_tag_update($tagids, array('count-' => 1));

    
}

// 标签数据处理 $arr=新提交的数组 $tagarr=保留的旧标签
function well_tag_process($tid, $fid, $new_tags = array(), $tagarr = array())
{
    if (empty($tid)) return '';

    

    // 新标签处理入库
    if ($new_tags) {

        

        $threadarr = array();
        $tagids = array();
        $i = 0;
        $size = 5;
        $n = count($tagarr);
        $n = $n > $size ? $size : $size - $n;

        

        foreach ($new_tags as $name) {
            ++$i;
            $name = trim($name);
            $name = stripslashes($name);
            $name = strip_tags($name);
            $name = str_replace(array('&nbsp;', '#', "@", "$", "%", "^", '&', '·', '<', '>', '；', '`', '~', '!', '￥', '……', ';', '?', '？', '-', '—', '_', '=', '+', '.', '{', '}', '|', ':', '：', '、', '/', '。', '[', ']', '【', '】', '‘', '	', '    ', '  ', '   ', '    '), '', $name);
            $name = htmlspecialchars($name, ENT_QUOTES);
            if ($name && $i <= $n) {
                
                // 查询标签
                $read = well_tag_read_name($name);
                
                if ($read) {
                    // 存在 count+1
                    $tagids[] = $read['tagid'];
                    
                } else {
                    // 入库
                    $arr = array('name' => $name, 'count' => 1);
                    
                    $tagid = well_tag_create($arr);
                    FALSE === $tagid and message(-1, lang('create_failed'));
                    $read = array('tagid' => $tagid, 'name' => $name);
                    
                }

                $tag_thread = array('tagid' => $read['tagid'], 'tid' => $tid);

                

                $threadarr[] = $tag_thread;

                

                $tagarr[$read['tagid']] = $read['name'];
            }
        }

        

        !empty($threadarr) and tag_thread_big_insert($threadarr);

        !empty($tagids) and well_tag_update($tagids, array('count+' => 1));
    }

    

    $json = empty($tagarr) ? '' : xn_json_encode($tagarr);

    

    return $json;
}




?>    
    $cache[$key] = empty($arr) ? NULL : $arr;
    
    return $cache[$key];
}

// 门户 获取需要在频道显示的栏目主题数据
function portal_channel_thread($fid)
{
    global $forumlist;
    if (empty($fid)) return NULL;

    

    $orderby = array('tid' => 1);
    $page = 1;

    

    // 遍历所有在频道显示内容的栏目
    $category_forumlist = channel_category($fid);

    $arrlist = array();
    $forum_tids = array();
    $tidlist = array();

    

    if ($category_forumlist) {
        foreach ($category_forumlist as &$_forum) {

            

            // 频道显示数据
            $arrlist['list'][$_forum['fid']] = array(
                'fid' => $_forum['fid'],
                'name' => $_forum['name'],
                'rank' => $_forum['rank'],
                'type' => $_forum['type'],
                'url' => $_forum['url'],
                'channel_new' => $_forum['channel_new'],
                
            );

            

            $forum_thread = thread_tid__find(array('fid' => $_forum['fid']), $orderby, $page, $_forum['channel_new'], 'tid', array('tid'));
            // 最新信息按栏目分组
            foreach ($forum_thread as $key => $_thread) {
                $forum_tids[$key] = $_thread;
            }

            

            unset($forum_thread);
        }
        $tidlist += $forum_tids;
    }

    

    unset($category_forumlist);

    

    // 获取属性对应的tid集合
    list($flaglist, $flagtids) = flag_thread_by_fid($fid);
    empty($flagtids) || $tidlist += $flagtids;

    

    unset($flagtids);

    

    // 频道置顶
    $stickylist = sticky_list_thread($fid);
    empty($stickylist) || $tidlist += $stickylist;

    

    // 在这之前合并所有二维数组 tid值为键/array('tid值' => tid值)
    $tidarr = arrlist_values($tidlist, 'tid');

    // 在这之前使用$tidarr = array_merge($tidarr, $arr)前合并所有一维数组 tid/array(1,2,3)
    

    if (empty($tidarr)) {
        $arrlist['list'] = isset($arrlist['list']) ? array_multisort_key($arrlist['list'], 'rank', FALSE, 'fid') : array();
        return $arrlist;
    }

    $tidarr = array_unique($tidarr);

    

    $pagesize = count($tidarr);

    

    // 遍历获取的所有tid主题
    $threadlist = well_thread_find_asc($tidarr, $pagesize);

    

    // 遍历时为升序，翻转为降序
    $threadlist = array_reverse($threadlist);

    

    foreach ($threadlist as &$_thread) {

        

        // 各栏目最新内容
        isset($forum_tids[$_thread['tid']]) AND $arrlist['list'][$_thread['fid']]['news'][$_thread['tid']] = $_thread;

        // 全站置顶内容
        isset($stickylist[$_thread['tid']]) AND $arrlist['sticky'][$_thread['tid']] = $_thread;

        // 首页属性主题
        if (!empty($flaglist)) {
            foreach ($flaglist as $key => $val) {

                if (isset($val['tids']) && in_array($_thread['tid'], $val['tids'])) {

                    $arrlist['flaglist'][$key][array_search($_thread['tid'], $val['tids'])] = $_thread;
                    ksort($arrlist['flaglist'][$key]);

                    $arrlist['flag'][$_thread['tid']] = $_thread;
                }
            }
        }

        
    }

    unset($threadlist);

    if (isset($arrlist['sticky'])) {
        $i = 0;
        foreach ($arrlist['sticky'] as &$val) {
            ++$i;
            $val['i'] = $i;
        }
    }

    if (isset($arrlist['flag'])) {
        $i = 0;
        foreach ($arrlist['flag'] as &$val) {
            ++$i;
            $val['i'] = $i;
        }
    }

    if (isset($arrlist['flaglist'])) {
        foreach ($arrlist['flaglist'] as &$val) {
            $i = 0;
            foreach ($val as &$v) {
                ++$i;
                $v['i'] = $i;
            }
        }
    }

    

    isset($arrlist['list']) AND $arrlist['list'] = array_multisort_key($arrlist['list'], 'rank', FALSE, 'fid');

    

    return $arrlist;
}




?>   $v = implode(",", $v);
        $temp[] = $v;
    }
    // 去掉重复的字符串,也就是重复的一维数组
    $temp = array_unique($temp);
    // 再将拆开的数组重新组装
    $output = array();
    foreach ($temp as $k => $v) {
        if ($stkeep) $k = $starr[$k];
        if ($ndformat) {
            $temparr = explode(",", $v);
            foreach ($temparr as $ndkey => $ndval) $output[$k][$ndarr[$ndkey]] = $ndval;
        } else $output[$k] = explode(",", $v);
    }
    return $output;
}

// 合并二维数组 如重复 值以第一个数组值为准
function array2_merge($array1, $array2, $key = '')
{
    if (empty($array1) || empty($array2)) return NULL;
    $arr = array();
    foreach ($array1 as $k => $v) {
        isset($v[$key]) ? $arr[$v[$key]] = array_merge($v, $array2[$k]) : $arr[] = array_merge($v, $array2[$k]);
    }
    return $arr;
}

/*
 * 对二维数组排序 两个数组必须有一个相同的键值
 * $array1 需要排序数组
 * $array2 按照该数组key排序
 * */
function array2_sort_key($array1, $array2, $key = '')
{
    if (empty($array1) || empty($array2)) return NULL;
    $arr = array();
    foreach ($array2 as $k => $v) {
        if (isset($v[$key]) && $v[$key] == $array1[$v[$key]][$key]) {
            $arr[$v[$key]] = $array1[$v[$key]];
        } else {
            $arr[] = $v;
        }
    }

    return $arr;
}




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<a href="/biancheng">编程之家</a><a href="/biancheng/1728059908a749666.html" title="首页">Windows环境安装配置nodejs详细教程</a></div></div></div><div class="fzithome-com main container-w cl"><div class="fzithome-com mainl"><div class="fzithome-com art-post"><div class="fzithome-com title"><h1>Windows环境安装配置nodejs详细教程</h1><div class="fzithome-com info"><span><a href="/biancheng"><i class="iconfont icon-crossborder-fill"></i>编程之家</a></span><span><i class="iconfont icon-browse"></i>63</span><span><i class="iconfont icon-message-fill"></i>0</span><span>
                        更新时间：2026-04-06 20:48:55</span></div></div><div class="fzithome-com art-content"><article class="single-post"><div class="fzithome-com entry"><path stroke-linecap="round" d="M5,0 0,2.5 5,5z"  style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0);"></path>
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 <h4>Windows下安装及配置Node.js环境</h4> 
 <ul><li>Windows下安装Node.js</li><li><ul><li>一、Node.js是什么&#xff1f;</li><li>二、npm是什么</li><li>三、环境搭建</li><li>四、环境配置</li><li>五、测试</li><li>六、配置淘宝镜像</li></ul> 
 </li></ul> 
 
<p></p> 
<h2>Windows下安装Node.js</h2> 
<h3>一、Node.js是什么&#xff1f;</h3> 
<p>Node.js是一个基于Chrome V8引擎的[JavaScript运行环境]。 Node.js使用了一个事件驱动、非阻塞式I/O 的模型。</p> 
<p>Node.js是一个让JavaScript运行在服务端的开发平台&#xff0c;它让JavaScript成为与PHP、Python、Perl、Ruby等服务端语言平起平坐的脚本语言 。</p> 
<p>总的来说就是&#xff1a;nodeJS是JavaScript脚本语言的运行环境。</p> 
<h3>二、npm是什么</h3> 
<p>npm其实是Node.js的包管理工具&#xff08;package manager&#xff09;&#xff0c;相当于后台的maven。</p> 
<p>为啥我们需要一个包管理工具呢&#xff1f;因为我们在Node.js上开发时&#xff0c;会用到很多别人写的JavaScript代码。 如果我们要使用别人写的某个包&#xff0c;每次都根据名称搜索一下官方网站&#xff0c;下载代码&#xff0c;解压&#xff0c;再使用&#xff0c;非常繁琐。于是一个集中管理的工具应运而生&#xff1a;大家都把自己开发的模块打包后放到npm官网上&#xff0c;如果要使用&#xff0c; 直接通过npm安装就可以直接用&#xff0c;不用管代码存在哪&#xff0c;应该从哪下载。 更重要的是&#xff0c;如果我们要使用模块A&#xff0c;而模块A又依赖于模块B&#xff0c;模块B又依赖于模块X和模块Y&#xff0c; npm可以根据依赖关系&#xff0c;把所有依赖的包都下载下来并管理起来。否则&#xff0c;靠我们自己手动管理&#xff0c;肯定既麻烦又容易出错。</p> 
<h3>三、环境搭建</h3> 
<ol><li>下载安装包<br /> 官网地址&#xff1a;https://nodejs/en/download/package-manager<br /> <br /> 如果不想使用命令行安装&#xff0c;也可选择下载预构建的安装文件&#xff0c;如下图&#xff0c;选择对应你系统的Node.js版本&#xff0c;这里我选择的是Windows系统、64位<br /> <br /> Tips&#xff1a;如果想下载指定版本&#xff0c;点击下图所示位置&#xff0c;即可选择自己想要的版本下载。也可直接打开此链接https://nodejs/dist/<br /> </li><li>安装<br /> 2.1 双击安装包<br /> <br /> 2.2 点击下一步<br /> <br /> 2.3 选中I accept the terms in the License Agreement&#xff0c;点击下一步<br /> 2.4 选择安装路径&#xff0c;路径不要包含中文&#xff0c;点击下一步<br /> <br /> 2.5 点击下一步<br /> 2.6 点击下一步<br /> 2.7 点击install安装<br /> 2.8 如果系统有提示“你要允许此应用对你的设备进行更改吗&#xff1f;”&#xff0c;选择是。<br /> 2.9 如下图效果就是安装成功<br /> 2.10 测试是否安装成功&#xff0c;按下【win&#43;R】键&#xff0c;输入cmd&#xff0c;打开cmd命令窗口&#xff0c;分别输入以下两行命令&#xff0c;成功显示版本说明安装成功</li></ol> 
<pre><code >显示node<span >.</span>js版本&#xff1a;node <span >-</span>v 
显示npm版本&#xff1a;  npm <span >-</span>v
</code></pre> 
<p></p> 
<h3>四、环境配置</h3> 
<ol><li>找到安装的目录&#xff0c;在安装目录下新建两个文件夹【node_global】和【node_cache】</li><li>创建完毕后&#xff0c;使用管理员身份打开cmd命令窗口&#xff0c;输入下面两行运行&#xff1b;运行后无报错就是成功</li></ol> 
<pre><code >npm config <span >set</span> prefix <span >&#34;你的安装路径\node_global&#34;</span>
npm config <span >set</span> cache <span >&#34;你的安装路径\node_cache&#34;</span>
</code></pre> 
<p><font>注&#xff1a;【你的安装路径】这五个字要替换</font></p> 
<ol start="3"><li>配置环境变量<br /> 3.1 右键点击当前文件管理器窗口左侧&#xff0c;或者屏幕上的【此电脑】&#xff0c;选择【属性】<br /> <br /> 3.2 选择高级系统设置<br /> 3.3 选择【环境变量】&#xff0c;会出现如右侧所示的图<br /> 3.4 在【系统变量】中点击【新建】</li></ol> 
<p>3.5 变量名输入“NODE_PATH”&#xff0c;变量值输入“你的安装路径\node_global\node_modules”&#xff0c;填写完&#xff0c;点击【确定】<br /> 3.6 出现如下图所示的数据即为成功<br /> <br /> 3.7 编辑【用户变量】中的【Path】</p> 
<p>3.8 将默认的C盘下【AppData\Roaming\npm】修改成【node_global】的路径&#xff0c;修改完后&#xff0c;点击【确定】<br /> <br /> <br /> 3.8 在【系统变量】中选择【Path】点击【编辑】<br /> </p> 
<p>3.9 添加【NODE_PATH】&#xff0c;点击【确定】</p> 
<p></p> 
<p>3.10 点击【环境变量】的【确定】<br /> 3.11 点击【系统属性】的【确定】</p> 
<h3>五、测试</h3> 
<p>配置完成后&#xff0c;全局安装一个最常用的express模块测试&#xff0c;按下【win&#43;R】键&#xff0c;输入cmd&#xff0c;打开cmd命令窗口&#xff0c;输入以下命令</p> 
<pre><code >npm install express <span >-</span>g  <span >// -g代表全局安装</span>
</code></pre> 
<p>出现以下界面说明配置成功<br /> </p> 
<h3>六、配置淘宝镜像</h3> 
<p>在安装模块的时候可能经常会出现卡住的情况&#xff0c;这是因为nodejs运行的环境这个平台是国外的&#xff0c;模块的安装源也是国外的网站&#xff0c;因为将其修改为淘宝镜像提高下载速度</p> 
<p>按下【win&#43;R】键&#xff0c;输入cmd&#xff0c;打开cmd命令窗口&#xff0c;输入以下命令</p> 
<pre><code >npm config <span >set</span> registry https<span >:</span><span >/</span><span >/</span>registry<span >.</span>npm<span >.</span>taobao<span >.</span>org
</code></pre> 
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