How can the DRY (Don't Repeat Yourself) principle be applied to optimize SQL update queries in PHP when updating values in a single column based on different identifiers?

When updating values in a single column based on different identifiers in SQL queries, the DRY principle can be applied by using a loop to iterate over the identifiers and update the values dynamically. This approach avoids repeating the update query for each identifier, making the code more efficient and maintainable. 

<?php
// List of identifiers
$identifiers = [1, 2, 3, 4];

// Value to update
$newValue = 'updated value';

// Update query template
$updateQuery = "UPDATE table_name SET column_name = :newValue WHERE identifier = :id";

// Prepare the query
$stmt = $pdo->prepare($updateQuery);

// Iterate over identifiers and update values
foreach ($identifiers as $id) {
    $stmt->execute(['newValue' => $newValue, 'id' => $id]);
}

echo "Values updated successfully.";
?>

Keywords

PHP SQL DRY principle update queries identifiers

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