How can PHP developers ensure they are selecting the correct fields from a database table to avoid errors in their code?

To ensure PHP developers are selecting the correct fields from a database table and avoid errors in their code, they should carefully review the database schema to understand the structure of the table and the available fields. Additionally, they should use descriptive aliases in their SQL queries to make it clear which fields are being selected. Testing the query results and verifying that the expected fields are returned can also help in ensuring the correctness of the selection.

// Example PHP code snippet to select specific fields from a database table
$query = "SELECT id, name, email FROM users";
$result = mysqli_query($connection, $query);

if ($result) {
    while ($row = mysqli_fetch_assoc($result)) {
        echo "ID: " . $row['id'] . ", Name: " . $row['name'] . ", Email: " . $row['email'] . "<br>";
    }
} else {
    echo "Error: " . mysqli_error($connection);
}