How to Connect to SQL Server Using PDO and the 'sqlsrv' Driver?

Connecting to SQL Server Using PDO and the SQL Server Driver

When attempting to establish a connection to a SQL Server database using PDO, developers may encounter confusion regarding the appropriate connection string to employ. While various drivers like odbc, dblib, and mssql exist, the recommended driver for connecting to SQL Server through PDO is 'sqlsrv'.

Connection String with the 'sqlsrv' Driver

The connection string when using the 'sqlsrv' driver should adhere to the following format:

$db = new PDO("sqlsrv:Server=YouAddress;Database=YourDatabase", "Username", "Password");

This connection string includes the following elements:

• Server: The address of the SQL Server instance.
• Database: The name of the database to connect to.
• Username: The database username with appropriate permissions.
• Password: The database password for the specified username.

Example Code

The following code sample demonstrates how to establish a connection to a SQL Server database using PDO and the 'sqlsrv' driver:

<?php

try {
    // Replace "YourAddress", "YourDatabase", "Username", and "Password" with actual values.
    $db = new PDO("sqlsrv:Server=YourAddress;Database=YourDatabase", "Username", "Password");
    echo "Connection established successfully." . PHP_EOL;
} catch (PDOException $e) {
    echo "Connection failed: " . $e->getMessage() . PHP_EOL;
}

?>

By following these guidelines, developers can effectively connect to SQL Server databases using PDO and the 'sqlsrv' driver.

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