How can I get the foreign keys of a table in mysql

Question

I am creating a class which, takes a table from a database, and displays it to a web-page, with as much functionality as possible. One of the things I would like to support,

Answer 1

based on Bill Karwin answer in this other thread, I used this solution to get all the info I needed, included on_delete and on_update rules:

SELECT kcu.referenced_table_schema, kcu.constraint_name, kcu.table_name, kcu.column_name, kcu.referenced_table_name, kcu.referenced_column_name, 
   rc.update_rule, rc.delete_rule 
FROM INFORMATION_SCHEMA.key_column_usage kcu
JOIN INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS rc on kcu.constraint_name = rc.constraint_name
WHERE kcu.referenced_table_schema = 'db_name' 
AND kcu.referenced_table_name IS NOT NULL 
ORDER BY kcu.table_name, kcu.column_name