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SQLServer2008

今天使用php操作数据库时发现插入SQL Server 2008数据库里的中文字段出现乱码,下面是我一开始时的一些情况:

开发环境是php5.3.3+Apache2.2.17+SQL Server 2008,php脚本文件的编码是utf-8,传给数据库的编码是GB2312(SQL Server的默认字符编码可能是这个,我不肯定),我用的是微软官方提供的SQLSRV库来连接数据库的(PS:SQL Server 2005开始已经不支持用mssql.dll来连接了),故使用sqlsrv_query($conn, "set names GB2312");语句来设置传给数据库的编码格式的,sql语句这样写了:insert into Opinion (content) values ('aaa中文内容');

运行这条sql语句,发现执行不成功,用sqlsrv_errors()函数来输出错误信息,得到如下结果:
复制代码 代码如下:
Array ( [0] => Array ( [0] => IMSSP [SQLSTATE] => IMSSP [1] => -46 [code] => -46 [2] => An error occurred translating the query string to UTF-16: �ڶ��ֽڵ�Ŀ�����ҳ�У�û�д� Unicode �ַ����ӳ�䵽���ַ� . [message] => An error occurred translating the query string to UTF-16: �ڶ��ֽڵ�Ŀ�����ҳ�У�û�д� Unicode �ַ����ӳ�䵽���ַ� . ) )

  这是在网页上显示的结果,上面的乱码是原封不动copy下来的。从 “An error occurred translating the query string to UTF-16”可以看出是字符编码转换有问题导致的。于是我使用php的iconv函数来对中文进行强制编码转换,然后执行sql语句,代码如下:
复制代码 代码如下:
$string = iconv('utf-8', 'GB2312//IGNORE', 'aaa中文内容');
$sql = "insert into Opinion (content) values ( $string)";
[code]
  这时候又报错了,错误信息如下:
[code]
Array ( [0] => Array ( [0] => 42S22 [SQLSTATE] => 42S22 [1] => 207 [code] => 207 [2] => [Microsoft][SQL Server Native Client 10.0][SQL Server]���� 'aaa��������' ���� [message] => [Microsoft][SQL Server Native Client 10.0][SQL Server]���� 'aaa��������' ���� ) )

  这个错误信息看不出什么头绪,我又把sql语句输出到网页上看一下是不是sql语句写错了,输出结果如下:
复制代码 代码如下:
insert into Opinion (content) values ( aaa��������)

  咋一看好像没问题,其实是有问题的,注意到后面那个括号里的参数是应该用引号来括起来的(表示它是一个字符串),所以我又修改了sql语句,代码如下:
复制代码 代码如下:
$sql = "insert into Opinion (content) values ( '".$string."')"; 为了看清楚我放大点


  用单引号把$string括起来,这样之后执行sql语句成功,并且数据库里保存的中文没有乱码。
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