What factors should be considered when determining the ranking criteria for search results in PHP?

When determining the ranking criteria for search results in PHP, factors such as relevance, popularity, recency, and user behavior should be considered. Relevance ensures that the most relevant results are displayed first, popularity can be based on the number of views or interactions, recency ensures that newer content is prioritized, and user behavior can include factors like click-through rates or time spent on a page.

// Sample PHP code snippet for ranking search results based on relevance, popularity, recency, and user behavior
function rankSearchResults($results) {
    // Implement ranking algorithm here based on relevance, popularity, recency, and user behavior
    // Return the sorted search results
    return $results;
}

// Usage example
$searchResults = array(/* array of search results */);
$rankedResults = rankSearchResults($searchResults);