PHP recursive function to delete all child nodes causes stackoverflow

Question

My MySQL looks like this: (the name of the table is category)

\'id\', \'content\', \'parent\'

where:

• id = the id of the category<

Answer 1

Alternatively, you could let the database handle this. In MySQL, an InnoDB ON DELETE CASCADE will do this automatically.

CREATE TABLE category (
    id INT PRIMARY KEY AUTO_INCREMENT,
    parent_id INT NULL,
    FOREIGN KEY (parent_id) REFERENCES category (id) ON DELETE CASCADE
) ENGINE=InnoDB

Root nodes should have NULL as parent (not 0 as some people seem to employ on Adjancency List tables).