# 14. 插件多語言 ## 多語言 插件多語言僅用于插件內的訪問 ## 創建語言包 在你的插件根目錄下創建`lang`名字的文件夾，該文件夾里面放語言包即可，路徑為：addons/demo/lang/。如下圖所示  其中里面還創建了`zh-cn`文件夾，該文件夾里的語言包不是全局的，作用范圍僅限控制器，跟控制器名保持一致，小寫命名。如上圖`index.php`語言包僅作用于`Index`控制器 ## 多語言的使用 使用`lang`函數即可調用 ``` <pre class="calibre16">``` <span class="token5">/** * $name 語言變量名 * array $vars 動態變量值 * $lang 指定語言 */</span> <span class="token6">lang</span><span class="token1">(</span>string $name<span class="token1">,</span> array $vars <span class="token">=</span> <span class="token1">[</span><span class="token1">]</span><span class="token1">,</span> string $lang <span class="token">=</span> <span class="token4">''</span><span class="token1">)</span> ``` ``` zh-cn 語言包 ``` <pre class="calibre16">``` <span class="token"><</span><span class="token">?</span>php <span class="token2">return</span> <span class="token1">[</span> <span class="token4">'Demo'</span> <span class="token">=</span><span class="token">></span> <span class="token4">'演示'</span> <span class="token1">]</span><span class="token1">;</span> ``` ``` Index控制器使用 ``` <pre class="calibre16">``` <span class="token"><</span><span class="token">?</span>php namespace addons\demo\controller<span class="token1">;</span> use think\addons\Controller<span class="token1">;</span> class <span class="token6">Index</span> extends <span class="token6">Controller</span> <span class="token1">{</span> public <span class="token2">function</span> <span class="token6">index</span><span class="token1">(</span><span class="token1">)</span> <span class="token1">{</span> echo <span class="token6">lang</span><span class="token1">(</span><span class="token4">'Demo'</span><span class="token1">)</span><span class="token1">;</span> <span class="token5">// 當語言切換到zh-cn時會輸出演示，如果沒有匹配到就輸出Demo</span> <span class="token1">}</span> <span class="token1">}</span> ``` ``` - 動態變量值 當我們需要里面某些值需要動態化時即可使用參數2傳入，如下 ``` <pre class="calibre16">``` <span class="token"><</span><span class="token">?</span>php <span class="token2">return</span> <span class="token1">[</span> <span class="token4">'Hello, %s!'</span><span class="token">=</span><span class="token">></span><span class="token4">'您好，%s！'</span> <span class="token1">]</span><span class="token1">;</span> ``` ``` ``` <pre class="calibre20">``` public <span class="token2">function</span> <span class="token6">index</span><span class="token1">(</span><span class="token1">)</span> <span class="token1">{</span> <span class="token5">// 中文結果，您好，admin！支持多個%s占位符。</span> echo <span class="token6">lang</span><span class="token1">(</span><span class="token4">'Hello, %s!'</span><span class="token1">,</span><span class="token1">[</span><span class="token4">'admin'</span><span class="token1">]</span><span class="token1">)</span><span class="token1">;</span> <span class="token1">}</span> ``` ```