PHP connect SQL server 2008 - How set utf-8 using odbc_connect

Question

I using ODBC to connect sql server 2008 like

$virtual_dsn = 'DRIVER={SQL Server};SERVER=MyServerName;DATABASE=myDatabase';
$conn = odbc_connect($virtual_dsn,'sa','mypass') or die('ODBC Error:: '.odbc_error().' :: '.odbc_errormsg().' :: '.$virtual_dsn);

if (!$conn){
    if (phpversion() < '4.0'){
      exit("Connection Failed: . $php_errormsg" );
    }
    else{
      exit("Connection Failed:" . odbc_errormsg() );
    }
}

// This query generates a result set with one record in it.
$sql="SELECT TOP 10 * FROM Mytable";

# Execute the statement.
$rs=odbc_exec($conn,$sql);

// Fetch and display the result set value.
if (!$rs){
    exit("Error in SQL");
}
while (odbc_fetch_row($rs)){


    $col1=odbc_result($rs, "name");
    echo "$col1 <br>";

}

// Disconnect the database from the database handle.
odbc_close($conn);

But i get text not correct like

b?�o c?�o việc sử dụng

i try to using odbc_exec($conn, "SET names utf8"); but get error

 Warning: odbc_exec(): SQL error: [Microsoft][SQL Server Native Client 10.0][SQL Server]'names' is not a recognized SET option., SQL state 37000 in SQLExecDirect in C:\xampp\htdocs\sql\index.php on line 32

How set utf-8 using odbc_connect thanks

Solution

odbc_exec doesn't accept 'SET NAMES utf8' as second parameter. the second parameter must be the query.

to set utf8 for variables only use utf8_decode or iconv

$col1=utf8_decode(odbc_result($rs, "name"));

or

$col1=odbc_result($rs, "name");
iconv("UTF-8", "CP1252", $col1);

and

Warning: odbc_exec(): SQL error: [Microsoft][SQL Server Native Client 10.0][SQL Server]'names' is not a recognized SET option., SQL state 37000 in SQLExecDirect in C:\xampp\htdocs\sql\index.php on line 32

this is not an error, is a WARNING. but check odbc_exec manual to ensure all.