What potential improvements or optimizations can be suggested for the PHP code snippet shared in the thread?

The issue with the PHP code snippet is that it is using the mysql extension, which is deprecated and insecure. To solve this issue, it is recommended to switch to either mysqli or PDO for database connections, as they offer better security and functionality. 

// Connect to the database using PDO
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "dbname";

try {
    $conn = new PDO("mysql:host=$servername;dbname=$dbname", $username, $password);
    $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
    echo "Connected successfully";
} catch(PDOException $e) {
    echo "Connection failed: " . $e->getMessage();
}

Keywords

performance code optimization PHP functions error handling security vulnerabilities

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