PHP - realize automatic switching of multiple languages

I believe that many students have browsed many websites with multi-language switching, and they feel that they are very good. Today, the editor has brought you an article about using PHP to perform automatic multi-language switching. introduce. I believe many students don’t know that PHP can also switch languages, so let us take a look at how PHP is implemented!

1. Add the following configuration in config.php of Home (the project name you chose)

<?php  
return array(  
    //&#39;配置项&#39;=>&#39;配置值&#39;  
        &#39;LANG_SWITCH_ON&#39;     =>     true,    //开启语言包功能          
        &#39;LANG_AUTO_DETECT&#39;     =>     true, // 自动侦测语言  
        &#39;DEFAULT_LANG&#39;         =>     &#39;zh-cn&#39;, // 默认语言          
        &#39;LANG_LIST&#39;            =>    &#39;en-us,zh-cn,zh-tw&#39;, //必须写可允许的语言列表  
        &#39;VAR_LANGUAGE&#39;     => &#39;l&#39;, // 默认语言切换变量  
);  
?>

2. Add a php file (tag.php) to the conf folder of Home and add the following code:

return array(  
    // 添加下面一行定义即可  
    'app_begin' => array('CheckLang')  
);

3. Copy the Extend/Behavior/CheckLangBehavior.class.php file to Home/lib/Behavior/ (only the full version of thinkphp package is available, if not, please create it yourself)

CheckLangBehavior.class.php code:

<?php  
defined(&#39;THINK_PATH&#39;) or exit();  
/** 
 * 语言检测 并自动加载语言包 
 * @category   Extend 
 * @package  Extend 
 * @subpackage  Behavior 
 */  
class CheckLangBehavior extends Behavior {  
    // 行为参数定义（默认值） 可在项目配置中覆盖  
    protected $options   =  array(  
            &#39;LANG_SWITCH_ON&#39;        => false,   // 默认关闭语言包功能  
            &#39;LANG_AUTO_DETECT&#39;      => true,   // 自动侦测语言 开启多语言功能后有效  
            &#39;LANG_LIST&#39;             => &#39;zh-cn&#39;, // 允许切换的语言列表 用逗号分隔  
            &#39;VAR_LANGUAGE&#39;          => &#39;l&#39;,        // 默认语言切换变量  
        );  
    // 行为扩展的执行入口必须是run  
    public function run(&$params){  
        // 开启静态缓存  
        $this->checkLanguage();  
    }  
    /** 
     * 语言检查 
     * 检查浏览器支持语言，并自动加载语言包 
     * @access private 
     * @return void 
     */  
    private function checkLanguage() {  
        // 不开启语言包功能，仅仅加载框架语言文件直接返回  
        if (!C(&#39;LANG_SWITCH_ON&#39;)){  
            return;  
        }  
        $langSet = C(&#39;DEFAULT_LANG&#39;);  
        // 启用了语言包功能  
        // 根据是否启用自动侦测设置获取语言选择  
        if (C(&#39;LANG_AUTO_DETECT&#39;)){  
            if(isset($_GET[C(&#39;VAR_LANGUAGE&#39;)])){  
                $langSet = $_GET[C(&#39;VAR_LANGUAGE&#39;)];// url中设置了语言变量  
                cookie(&#39;think_language&#39;,$langSet,3600);  
            }elseif(cookie(&#39;think_language&#39;)){// 获取上次用户的选择  
                $langSet = cookie(&#39;think_language&#39;);  
            }elseif(isset($_SERVER[&#39;HTTP_ACCEPT_LANGUAGE&#39;])){// 自动侦测浏览器语言  
                preg_match(&#39;/^([a-z\d\-]+)/i&#39;, $_SERVER[&#39;HTTP_ACCEPT_LANGUAGE&#39;], $matches);  
                $langSet = $matches[1];  
                cookie(&#39;think_language&#39;,$langSet,3600);  
            }  
            if(false === stripos(C(&#39;LANG_LIST&#39;),$langSet)) { // 非法语言参数  
                $langSet = C(&#39;DEFAULT_LANG&#39;);  
            }  
        }  
        // 定义当前语言  
        define(&#39;LANG_SET&#39;,strtolower($langSet));  
        $group = &#39;&#39;;  
        $path    =   (defined(&#39;GROUP_NAME&#39;) && C(&#39;APP_GROUP_MODE&#39;)==1) ? BASE_LIB_PATH.&#39;Lang/&#39;.LANG_SET.&#39;/&#39; : LANG_PATH.LANG_SET.&#39;/&#39;;  
        // 读取项目公共语言包  
        if(is_file(LANG_PATH.LANG_SET.&#39;/common.php&#39;))  
            L(include LANG_PATH.LANG_SET.&#39;/common.php&#39;);       
        // 读取分组公共语言包  
        if(defined(&#39;GROUP_NAME&#39;)){  
            if(C(&#39;APP_GROUP_MODE&#39;)==1){ // 独立分组  
                $file = $path.&#39;common.php&#39;;  
            }else{ // 普通分组  
                $file = $path.GROUP_NAME.&#39;.php&#39;;  
                $group = GROUP_NAME.C(&#39;TMPL_FILE_DEPR&#39;);  
            }  
            if(is_file($file))  
                L(include $file);  
        }  
        // 读取当前模块语言包  
        if (is_file($path.$group.strtolower(MODULE_NAME).&#39;.php&#39;))  
            L(include $path.$group.strtolower(MODULE_NAME).&#39;.php&#39;);  
    }  
}

##4. In Home Create 3 language folders under the lang folder. They are zh-cn en-us zh-tw,

Create a common.php file in each of these three folders, as shown in the figure:

In common.php, write

<?php  
return array(  
        &#39;welcome&#39;=>&#39;Welcome to use thinkphp&#39;,  
);  
?>

<?php  
return array(  
    &#39;welcome&#39;=>&#39;欢迎使用ThinkPHP&#39;,  
);

<?php  
return array(  
    &#39;welcome&#39;=>&#39;歡迎使用ThinkPHP&#39;,  
);  
?>

5. Create the view index.html# in the tpl/Index/ folder ##

<!DOCTYPE HTML>  
<html>  
 <head>  
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8">  
  <title>ThinkPHP示例：多语言</title>  
 </head>  
 <body>  
 <div class="main">  
<div>切换语言：<a href="?l=zh-cn">简体中文</a> | <a href="?l=zh-tw">繁体中文</a> | <a href="?l=en-us">英文</a></div>  
 <div class="result">{$Think.lang.welcome}</div>  
</div>  
 </body>  
</html>

Done!

If you want to switch the background language, in each sentence Add L before it, such as:

public function index(){  
print  L('add_user_error');　　//add_user_error只是语言变量,具体的语言要到语言包里写  
$this->display();  
}

The above is all the content of this article. You can modify it according to your own needs. I hope it can be helpful to the students.

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