Select statement in PHP with MSSQL

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I am learning how to use PHP with MSSQL server but having trouble doing a simple query. I have the below code which the goal is to be a simple login page. However it is currently just trying to get the row count when executed. I am getting my echo'd "Error getting row count" message when I would be expecting "2". I'm not getting any errors with the connection($db) or the statement($stmt).

Any help is appreciated!

PHP

<?php
include 'config.php';
session_start();
$errorMsg = "";
$validUser = $_SESSION["login"] === true;
if(isset($_POST["sub"])) {
/* Connect using SQL Server Authentication. */  

// $subUsername = $_POST["username"];
// $subPassword = $_POST["password"];
//Check Connection
if( $db === false ) {
     die( print_r( sqlsrv_errors(), true));
}


$sql = "SELECT pin FROM user_db WHERE username like 'Cody%'";

$stmt = sqlsrv_query($db, $sql);

if( $stmt === false ) {
     die( print_r( sqlsrv_errors(), true));
}

}

$row_count = sqlsrv_num_rows($stmt);
 
if ($row_count === false)
 
echo 'Error getting row count';
else
   echo $row_count;

if($validUser) {
   header("Location: /index.php"); die();
}
?>
<!DOCTYPE html>
<html>
<head>
  <meta http-equiv="content-type" content="text/html;charset=utf-8" />
  <title>Login</title>
</head>
<body>
  <form name="input" action="" method="post">
    <label for="username">Username:</label><input type="text" value="<?= $_POST["username"] ?>" id="username" name="username" />
    <label for="password">Password:</label><input type="password" value="" id="password" name="password" />
    <div class="error"><?= $errorMsg ?></div>
    <input type="submit" value="Home" name="sub" />
  </form>
</body>
</html>

What I have tried:

Originally I was trying to get the row count using parameters in my statement but wasn't getting any results. So instead, I have converted it to see if I can just get a row count but still having trouble.

Posted 15-May-23 9:02am

Cody O'Meara

Updated 15-May-23 9:59am

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0x01AA 15-May-23 15:10pm

From PHP: sqlsrv_num_rows - Manual[^]
sqlsrv_num_rows, Return Values
Returns the number of rows retrieved on success and false if an error occurred. If a forward cursor (the default) or dynamic cursor is used, false is returned.

Cody O'Meara 15-May-23 15:40pm

Thank you! I should read better. This resource helped me to resolve https://learn.microsoft.com/en-us/sql/connect/php/cursor-types-sqlsrv-driver?view=sql-server-ver16

0x01AA 15-May-23 16:02pm

You are welcome

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0x01AA · Accepted Answer · 2023-05-15T09:59:00

Solution 1

Looks like OP solved it.
Only answered to remove it from unanswered questions.

According to OP, that piece of text was helpfull: Cursor Types (SQLSRV Driver) - PHP drivers for SQL Server | Microsoft Learn[^]

Posted 15-May-23 9:59am

0x01AA

Updated 15-May-23 10:01am

v2