How can the processing of search words in PHP scripts be simplified to reduce unnecessary complexity and improve efficiency?

When processing search words in PHP scripts, one way to simplify the process is to use the `trim()` function to remove any leading or trailing whitespace from the search query. This helps in ensuring that the search query is clean and does not contain any unnecessary characters that might affect the search results. Additionally, using the `strtolower()` function can help in making the search case-insensitive, thus improving the efficiency of the search process.

// Get the search query from the form input
$searchQuery = $_GET['search'];

// Trim the search query to remove leading and trailing whitespace
$searchQuery = trim($searchQuery);

// Convert the search query to lowercase for case-insensitive search
$searchQuery = strtolower($searchQuery);

// Process the search query further
// (Add your search functionality here)