用php和MySql来与ODBC数据连接_php基础
ODBC 是指开放数据连接,它是微软主导的数据驱动程序,它可以与其它数据连接,通过SQL语言来对数据进行操作的,当然PHP也提供了对ODBC数据连接的函数,
用PHP与ODBC连接主要通过几个函数来完成的,
首先先来认识几个与ODBC接口的函数:
int odbc_connect(string dsn, string user, string password, int [cursor_type]);是连接至ODBC数据库
dsn ,user,password 是对应着ODBC里的内容,cursor_type是选择游标类型,(可以查考其他文档,在这里我用它默认值)
int odbc_do(int connection_id, string query);是执行SQL语言的函数,connecton_id是odbc_connecti还回的值,query是我们最关心的SQL语言语句,
string odbc_result(int result_id, mixed field);是取的数据的函数,result_id是odbc_do执行返回值,field是字段索引值
void odbc_close(int connection_id);是关闭数据连接的.
我们先用这几个函数来与ODBC连接.
我们假设在ODBC里设置dsn为 yuange user和password可以不要,当然假如要与SQL Server连接时需要user和password的!
在yuange里有个表counter
$conid=odbc_connect("yuange","","");
$sql="select * from counter";
$resid=odbc_do($conid,$sql);
while(odbc_fetch_row($resid)){
$serial=odbc_result($resid,1);
$riqi=odbc_result($resid,2);
if($serial%2){
echo $serial." ".$riqi."
";
}
}
odbc_close($conid);
?>
我在Win98上装的是PWS加上php4.0和mysql3.02版本运行良好.
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