help me to write php code for this MySQL sql

Question

CREATE TABLE articles
( id INTEGER NOT NULL PRIMARY KEY AUTO_INCREMENT
, title VARCHAR(99) NOT NULL
, dateposted DATE NOT NULL
, author VARCHAR(99) NOT NULL
);
CREATE TABLE article_rel
( this_article INTEGER NOT NULL REFERENCES articles (id)
, related_article INTEGER NOT NULL REFERENCES articles (id) 
, PRIMARY KEY (this_article,related_article)
);

I am building article site, where i want to show related article. I can write code for articles table , just scratching heads how to do with article_rel table.

Answer 1

SELECT
  a.*
FROM
  articles a
INNER JOIN
  article_rel ar
    ON
  ar.this_article = SOME_ARTICLE_ID_HERE
    AND
  ar.related_article = a.id

Brain is fried, but I think that will do it.