What are the best practices for structuring PHP code to handle multiple SQL queries with varying conditions efficiently?

When handling multiple SQL queries with varying conditions in PHP, it is essential to use prepared statements to prevent SQL injection attacks and improve performance. Additionally, organizing the code into separate functions or classes for each query can help maintain code readability and reusability. Using conditional statements to dynamically construct the SQL queries based on the given conditions can also improve efficiency. 

// Example of structuring PHP code to handle multiple SQL queries efficiently

// Function to retrieve data from the database based on given conditions
function fetchDataFromDB($condition) {
    $pdo = new PDO("mysql:host=localhost;dbname=mydatabase", "username", "password");
    
    // Prepare the SQL statement with placeholders
    $stmt = $pdo->prepare("SELECT * FROM mytable WHERE condition = :condition");
    
    // Bind the parameter value to the placeholder
    $stmt->bindParam(':condition', $condition);
    
    // Execute the prepared statement
    $stmt->execute();
    
    // Fetch the data
    $result = $stmt->fetchAll(PDO::FETCH_ASSOC);
    
    return $result;
}

// Example of calling the fetchDataFromDB function with different conditions
$data1 = fetchDataFromDB('condition1');
$data2 = fetchDataFromDB('condition2');

Keywords

PHP SQL queries code structuring efficiency varying conditions

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