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HomeBackend DevelopmentPHP Tutorialecho显示中文乱码的有关问题

echo显示中文乱码的问题
PHP代码如下:

echo "<li>ISBN:".$isbn."</br>书名:".$name."</br>作者:".$author."</br>";

数据由数据库中获取后赋值到$isbn。
显示乱码

加代码:
echo "<meta http-equiv='Content-Type'' content='text/html; charset=utf-8'>";

后:


怎么解决啊??
------解决方案--------------------
没事为何要加mysql_set_charset("gbk");?

难怪会这样,所以才觉得数据库里的不是UTF8

mysql_set_charset("gbk"); 等于 mysql_query("set names gbk"); 你已经转过一次,再转UTF8。。。
------解决方案--------------------
utf-8 编码的 书名 在 gbk 环境中会显示成 涔﹀悕
此时从数据库中读取的数据显示正常
由此可知:从数据库读取的数据是 gbk 编码的,这一点可从发出 utf-8 语言声明后,乱码情况反过来了加以佐证

按你目前的情况,你需要 $isbn = iconv('gbk', 'utf-8', $isbn); 即将读出的数据做从 gbk 到 utf-8 的编码转换
并应有 header('Content-type: text/html;charset=utf-8'); 语言声明的头

出现这种现象的原因是:
数据库为 latin1 的
字段是 utf8 的
插入是的数据是 gbk 的
由于没有在插入数据时声明字符集,所以 gbk 的内容被当做 latin1 插入到了 字段中
读出时同样也没有声明字符集,于是字段中的数据又当做 latin1 原样读回来了
其实这是很正常的,数据库本来就不该改变存储的数据
不然放进仓库的是汽车,取回时变成了摩托,那不就乱了套了吗?

对于数据库已有的数据也只有这样了,如不想放弃则需要做转码处理(很费事的)
以后再插入和读取数据时一定要注意:先执行 set names XXX 指令,注意:这个 XXX 是当前数据的字符集名
比如将 gbk 数据插入就 mysql_query("set names gbk");
将数据按 utf-8 取回就 mysql_query("set names utf8");

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