Unable to connect to SQL Server with PHP -

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connection sqlsrv string not working. 

$login = new pdo("sqlsrv:server=mysqlserver\sqlexpress;database=db_name", "user", "passw");

and have error message: fatal error: invalid handle returned.

i'm 101% sure login details ok. because works on other projects. problem php 7?

looks connect ms-sql, need utilize odbc.

reference:http://php.net/manual/en/pdo.construct.php#120705

$odbc="odbc:driver={sql server};server=$server;database=$database;";  $cnx = new pdo( $odbc , $user, $password);

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