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Notice: Undefined variable: conn in E:\xampp\htdocs\index1.php on line 21

Warning: sqlsrv_prepare() expects parameter 1 to be resource, null given in E:\xampp\htdocs\index1.php on line 21
Array ( [0] => Array ( [0] => IMSSP [SQLSTATE] => IMSSP [1] => -14 [code] => -14 [2] => An invalid parameter was passed to sqlsrv_prepare. [message] => An invalid parameter was passed to sqlsrv_prepare. ) )