What are some strategies for handling data retrieval and display in PHP when editing database records?

When editing database records in PHP, it is important to retrieve the existing data from the database and display it in the form for the user to edit. One common strategy is to query the database for the specific record using its unique identifier (e.g., ID), populate the form fields with the retrieved data, and allow the user to make changes before updating the record in the database. 

<?php
// Assuming $db is your database connection

// Retrieve record to edit
$id = $_GET['id']; // Assuming the ID is passed through the URL
$query = "SELECT * FROM your_table WHERE id = $id";
$result = mysqli_query($db, $query);
$row = mysqli_fetch_assoc($result);

// Display form with existing data
?>
<form action="update_record.php" method="post">
    <input type="hidden" name="id" value="<?php echo $row['id']; ?>">
    <input type="text" name="name" value="<?php echo $row['name']; ?>">
    <input type="email" name="email" value="<?php echo $row['email']; ?>">
    <!-- Add more form fields as needed -->
    <button type="submit">Update Record</button>
</form>

Keywords

SQL queries PDO prepared statements data validation error handling

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