What best practices can be followed to efficiently manage and display comments associated with user entries in PHP?

To efficiently manage and display comments associated with user entries in PHP, it is recommended to store comments in a database table with a foreign key linking them to the corresponding user entry. When displaying comments, retrieve them from the database based on the entry they are associated with. Use SQL queries to filter and order comments as needed for efficient retrieval. 

// Assuming a database table named 'comments' with columns 'id', 'entry_id', 'comment_text', 'created_at'

// Retrieve comments associated with a specific user entry
$entry_id = $_GET['entry_id']; // Assuming the entry ID is passed as a parameter
$sql = "SELECT * FROM comments WHERE entry_id = :entry_id ORDER BY created_at DESC";
$stmt = $pdo->prepare($sql);
$stmt->bindParam(':entry_id', $entry_id, PDO::PARAM_INT);
$stmt->execute();
$comments = $stmt->fetchAll();

// Display comments
foreach ($comments as $comment) {
    echo "<p>{$comment['comment_text']}</p>";
}

Keywords

SQL queries pagination caching sanitization validation

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