php读取mssql的ntext字段反回值为空
今天在使用php连接mssql数据库时发现ntext字段的内容无法显示,经过查询发现ntext字段在php中不被支持,解决办法我们只要把ntext字段改成text即可解决了。
果是表里面没有ntext字段,可以用以下代码:
代码如下 | 复制代码 |
if(!$link || !mssql_select_db('php', $link)) // Do a simple query, select the version of echo $row[0]; // Clean up |
如果表里面有ntext军字段,且不好修改回text字段, 可以如下:
1.修改 php.ini
打开php.ini
找到:
代码如下 | 复制代码 |
;mssql.textlimit = 4096
|
2.可以使用修改字段,由于sql server中,ntext和nvarchar字段是用unicode编码存储内容的,
因此php通过mssql扩展读取带ntext和nvarchar类型字段的时候会抱错。
如果 title 字段类型为 nvarchar,content 字段类型为 ntext ,那么下面的sql语句会报错:
错的:
代码如下 | 复制代码 |
select title,content from article
|
3.如果你是虚拟主机,可以使用adodb 组件来读取。如果你主机不支持,目前笔者也没办法了。
代码如下 | 复制代码 |
include("adodb/adodb.inc.php"); //包含adodb类库文件 $conn=NewADOConnection('odbc_mssql'); //连接SQL Server数据库 $conn->Connect("Driver={SQL Server};Server=localhost; Database=mydb;",'username','password'); ?> |

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