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Creates a connection resource and opens a connection. By default, the connection is attempted using Windows Authentication.


sqlsrv_connect( string $serverName [, array $connectionInfo])


$serverName: A string specifying the name of the server to which a connection is being established. An instance name (for example, "myServer\instanceName") or port number (for example, "myServer, 1521") can be included as part of this string. For a complete description of the options available for this parameter, see the Server keyword in the ODBC Driver Connection String Keywords section of Using Connection String Keywords with SQL Native Client.

$connectionInfo [OPTIONAL]: An associative array that contains connection attributes (for example, array("Database" => "AdventureWorks")). See Connection Options for a list of the supported keys for the array.

Return Value

A PHP connection resource. If a connection cannot be successfully created and opened, false is returned.


If values for the UID and PWD keys are not specified in the optional $connectionInfo parameter, the connection will be attempted using Windows Authentication. For more information about connecting to the server, see How to: Connect Using Windows Authentication and How to: Connect Using SQL Server Authentication.


The following example creates and opens a connection using Windows Authentication. The example assumes that SQL Server and the AdventureWorks database are installed on the local computer. All output is written to the console when the example is run from the command line.

Connect to the local server using Windows Authentication and specify
the AdventureWorks database as the database in use. To connect using
SQL Server Authentication, set values for the "UID" and "PWD"
 attributes in the $connectionInfo parameter. For example:
$connectionInfo = array("UID" => $uid, "PWD" => $pwd, "Database"=>"AdventureWorks");
$serverName = "(local)";
$connectionInfo = array( "Database"=>"AdventureWorks");
$conn = sqlsrv_connect( $serverName, $connectionInfo);

if( $conn )
     echo "Connection established.\n";
     echo "Connection could not be established.\n";
     die( print_r( sqlsrv_errors(), true));

// Perform operations with connection.

/* Close the connection. */
sqlsrv_close( $conn);

See Also


About Code Examples in the Documentation

Other Resources

SQLSRV Driver API Reference (Microsoft Drivers for PHP for SQL Server)

Connecting to the Server