What is the importance of using a unique identifier (ID) in databases when linking to detailed information in PHP?

When linking to detailed information in a database using PHP, it is important to use a unique identifier (ID) to ensure that the correct record is retrieved. This unique identifier helps to distinguish between different records and prevent any confusion or errors when fetching data from the database. 

// Using a unique identifier (ID) to fetch detailed information from a database in PHP
$id = $_GET['id']; // Assuming the ID is passed through the URL parameter

// Query to fetch detailed information based on the ID
$query = "SELECT * FROM table_name WHERE id = $id";
$result = mysqli_query($connection, $query);

// Fetching and displaying the detailed information
while ($row = mysqli_fetch_assoc($result)) {
    echo "Name: " . $row['name'] . "<br>";
    echo "Email: " . $row['email'] . "<br>";
    // Add more fields as needed
}

Keywords

unique identifier ID databases linking PHP

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