What are some potential performance issues when using REST API and PDO in PHP for handling large datasets?

One potential performance issue when using REST API and PDO in PHP for handling large datasets is the memory consumption that can occur when fetching and processing large amounts of data. To solve this, you can use PDO's `fetch` method with a `PDO::FETCH_ASSOC` fetch style to fetch rows one by one instead of fetching the entire result set at once. 

// Connect to the database
$pdo = new PDO("mysql:host=localhost;dbname=database", "username", "password");

// Prepare and execute the query
$stmt = $pdo->prepare("SELECT * FROM large_table");
$stmt->execute();

// Fetch rows one by one using PDO::FETCH_ASSOC
while ($row = $stmt->fetch(PDO::FETCH_ASSOC)) {
    // Process the row
    // Example: echo $row['column_name'];
}

// Close the connection
$pdo = null;

Keywords

REST API PDO performance large datasets optimization

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