Connect to Azure Database using Azure Web App - php

Question

I'm trying to connect to my Azure sql database using following code:
<?php
//Constants to connect with the database
define('DB_USERNAME', 'username');
define('DB_PASSWORD', 'pass');
define('DB_HOST', 'xyz-server.database.windows.net');
define('DB_NAME', 'xyz_db');
<?php
//Class DbConnect
class DbConnect
{
//Variable to store database link
private $con;
//Class constructor
function __construct()
{
}
//This method will connect to the database
function connect()
{
//Including the constants.php file to get the database constants
include_once dirname(__FILE__) . '/Constants.php';
//connecting to mysql database
$this->con = new mysqli(DB_HOST, DB_USERNAME, DB_PASSWORD, DB_NAME);
//Checking if any error occured while connecting
if (mysqli_connect_errno()) {
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
//finally returning the connection link
return $this->con;
}
}
I'm getting this error
Type: ErrorException
Code: 2
Message: mysqli::__construct(): (HY000/9002): The connection string may not be right. Please visit portal for references.
File: /home/site/wwwroot/blingoo/include/DbConnect.php
Line: 22
I'm just beginning with Azure. Maybe I'm missing something. If you could simply point how to connect my database and web app(where I'm using php files to connect to the database), that will be great.

Answer 1

Seems to me that your code is trying to connect to MySQL rather than MSSQL.
To connect to MSSQL use the following:
<?php
$serverName = "your_server.database.windows.net"; // update me
$connectionOptions = array(
"Database" => "your_database", // update me
"Uid" => "your_username", // update me
"PWD" => "your_password" // update me
);
//Establishes the connection
$conn = sqlsrv_connect($serverName, $connectionOptions);
$tsql= "SELECT TOP 20 pc.Name as CategoryName, p.name as ProductName
FROM [SalesLT].[ProductCategory] pc
JOIN [SalesLT].[Product] p
ON pc.productcategoryid = p.productcategoryid";
$getResults= sqlsrv_query($conn, $tsql);
echo ("Reading data from table" . PHP_EOL);
if ($getResults == FALSE)
echo (sqlsrv_errors());
while ($row = sqlsrv_fetch_array($getResults, SQLSRV_FETCH_ASSOC)) {
echo ($row['CategoryName'] . " " . $row['ProductName'] . PHP_EOL);
}
sqlsrv_free_stmt($getResults);
?>
source: https://learn.microsoft.com/en-us/azure/sql-database/sql-database-connect-query-php

Answer 2

Since you are trying to connect to Azure SQL you can use PDO_DBLIB driver, if you have this extension installed. See php -m.
$config = [
'dsn' => 'dblib:host=xyz-server.database.windows.net;dbname=xyz_db',
'user' => 'username',
'pass' => 'password',
];
$connection = new PDO($config['dsn'], $config['user'], $config['pass']);
$sth = $connection->prepare('Your query comes here;');
$sth->execute();
$rows = $sth->fetchAll(PDO::FETCH_CLASS);
foreach ($rows as $row) {
// Do the processing here
}