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HomeBackend DevelopmentPHP Tutorialstrtoupper回导致中文乱码么

本帖最后由 molaifeng 于 2013-11-25 09:04:16 编辑

    在部署项目时,遇到一个奇怪的问题,页面打开后,php脚本嵌套在html页面里的部分出现乱码,数据库是没问题的。后来定位,发现问题出现在这段代码上(tp框架)。

/** * 获取和设置语言定义(不区分大小写) * @param string|array $name 语言变量 * @param string $value 语言值 * @return mixed */function L($name=null, $value=null) {    static $_lang = array();    // 空参数返回所有定义    if (empty($name))        return $_lang;    // 判断语言获取(或设置)    // 若不存在,直接返回全大写$name    if (is_string($name)) {        echo $name, ' ';        $name = strtoupper($name);echo $name;        if (is_null($value))            return isset($_lang[$name]) ? $_lang[$name] : $name;        $_lang[$name] = $value; // 语言定义        return;    }    // 批量定义    if (is_array($name))        $_lang = array_merge($_lang, array_change_key_case($name, CASE_UPPER));    return;}



后来,把那个strtoupper该成了mb_strtoupper
$name = mb_strtoupper($name, 'UTF-8');

这个项目部署在其他服务器时没出现这个问题啊,哪位大大解释下,谢谢!!!

回复讨论(解决方案)

图没发全

是否是浏览器编码问题造成,检查下文件编码。

不是,问题已经定位了,就是上面的那个代码

strtoupper、strtolower 在以前某些 php 版本中曾出现过对中文产生影响的问题
但早已经纠正过了

感觉你对这个函数的使用存在一些问题
离开这个函数原来的语境,这个函数只不过是设置一些键值对
和定义常量相似
比如
L('x', '这是个问题');
echo L('X'); // 这是个问题
L('x', '这不是个问题');
echo L('X'); //这不是个问题
echo L('x'); //这不是个问题

因此,在一般思维中,总是用简单的字符组合去对应复杂的字符组合(这就是缩略词)

这个函数在 TP 中是用于提示信息的多语言转换的,所以也不大可能用中文做键
一旦程序文本中出现中文,那么这个程序文本在执行时就有可能出现乱码问题。所以应避免在程序文本中出现中文
这就是这个函数的精髓所在

谢谢大大的回答!!!

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