How to update data in sqlsrv using PHP - php

Question

Hi guys im having difficult time here. i want to update data in sql server by using php but it keeps failing. can anyone help me with this? here are my sample codes i have used. Please guys help me with that i have been assigned to create that and it keeps me failing.im not sure where the problem is. i will be thankfull for your help.
<?php
if(isset($_POST['update'])) {
$server = "WIN-2012SRV-BK";
$user = "sa";
$pass = "";
$db = "test";
$connInfo = array("Database"=>$db, "UID"=>$user, "PWD"=>$pass);
$conn = sqlsrv_connect($server, $connInfo) or die( print_r( sqlsrv_errors(), true));
//$id = $_POST['id'];
//$emp_salary = $_POST['emp_salary'];
$pin = $_POST['pin'];
$phone = $_POST['phone'];
$sql = "UPDATE [test].[dbo].[subscriptions] ". "SET pin = {$pin} ".
"WHERE phone = {$phone}" ;
//$sqlsrv_select_db('test');
$retval = sqlsrv_query( $sql, $conn );
if(! $retval ) {
die('Could not update data: ');
}
echo "Updated data successfully\n";
mysql_close($conn);
}else {
?>
<form method = "post" action = "<?php $_PHP_SELF ?>">
<table width = "400" border =" 0" cellspacing = "0"
cellpadding = "0">
<tr>
<td width = "100">Phone Number</td>
<td><input name = "phone" type = "text"
id = "phone"></td>
</tr>
<tr>
<td width = "100"> </td>
<td> </td>
</tr>
<tr>
<td width = "100"> </td>
<td>
<input name = "update" type = "submit"
id = "update" value = "Update">
</td>
</tr>
</table>
</form>
<?php
}
?>
The error i am getting is
Warning: sqlsrv_query() expects parameter 1 to be resource, string given in C:\xampp\htdocs\visionFund\pin-reset.php on line 70
Could not update data:

Answer 1

You have to put the connection string inside the query:
$sql = "$connection_string,UPDATE [test].[dbo].[subscriptions] ". "SET pin = {$pin} ". "WHERE phone = {$phone}" ;