How can PHP developers optimize keyword search performance by implementing a relative relationship between articles and keywords?

To optimize keyword search performance, PHP developers can implement a relative relationship between articles and keywords by creating a mapping table that links articles to keywords. This allows for more efficient searches as the system can quickly identify relevant articles based on the associated keywords.

// Create a mapping table to store the relationship between articles and keywords
CREATE TABLE article_keyword_mapping (
    article_id INT,
    keyword_id INT,
    PRIMARY KEY (article_id, keyword_id)
);

// Query to retrieve articles based on a specific keyword
SELECT articles.*
FROM articles
JOIN article_keyword_mapping ON articles.id = article_keyword_mapping.article_id
WHERE article_keyword_mapping.keyword_id = :keyword_id;