What are some best practices for structuring and organizing PHP code to optimize search functionality in a web application?

To optimize search functionality in a web application, it is important to structure and organize PHP code efficiently. One best practice is to separate search logic into its own function or class to keep code modular and maintainable. Additionally, using proper indexing on database columns can improve search performance. Lastly, utilizing caching mechanisms can help reduce the load on the server and speed up search results retrieval.

// Example of structuring and organizing PHP code for search functionality

// Define a function to handle search logic
function searchItems($keyword) {
    // Perform search query using appropriate SQL statements
    // Return search results
}

// Call the searchItems function with the search keyword
$searchResults = searchItems('example keyword');

// Display search results on the web page
foreach ($searchResults as $result) {
    echo $result['title'] . '<br>';
}