How can PHP developers ensure data integrity when making bulk updates to database records?

To ensure data integrity when making bulk updates to database records, PHP developers can use transactions. By wrapping the bulk update process in a transaction, developers can ensure that either all updates are applied successfully or none at all, preventing partial updates that could lead to inconsistent data. 

<?php

// Establish database connection
$pdo = new PDO("mysql:host=localhost;dbname=mydatabase", "username", "password");

// Begin transaction
$pdo->beginTransaction();

try {
    // Perform bulk updates within the transaction
    $stmt = $pdo->prepare("UPDATE mytable SET column = :value WHERE condition = :condition");
    
    foreach ($bulkData as $data) {
        $stmt->execute([
            'value' => $data['value'],
            'condition' => $data['condition']
        ]);
    }

    // Commit the transaction if all updates are successful
    $pdo->commit();
} catch (Exception $e) {
    // Rollback the transaction if any update fails
    $pdo->rollBack();
    echo "Error: " . $e->getMessage();
}

Keywords

transactions prepared statements SQL injection data validation error handling

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