I want to make free subscription area

This thread asked how to automatically remove members after 30 days (@mvblhp); @almostbob was right to push automation. A safer, production-ready approach is: record when a subscription starts or when it should expire, mark expired accounts first (soft-delete), and run a scheduled job that moves or purges records in controlled batches. Hard deletes should be a second step after a grace/archive period to avoid accidental data loss and to preserve referential integrity.

A compact schema change that supports this:

ALTER TABLE users
  ADD COLUMN subscription_start DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
  ADD COLUMN expires_at DATETIME NOT NULL,
  ADD COLUMN status ENUM('active','expired','archived','deleted') NOT NULL DEFAULT 'active',
  ADD INDEX (expires_at);

Set expires_at at signup (for example with DATE_ADD(NOW(), INTERVAL 30 DAY)), store times in UTC, and index the expiry column for fast scans.

Run expiration from a daily cron or the MySQL event scheduler (if available). Example MySQL event to mark expirations:

CREATE EVENT expire_users
ON SCHEDULE EVERY 1 DAY
DO
  UPDATE users
  SET status = 'expired'
  WHERE status = 'active' AND expires_at <= UTC_TIMESTAMP();

Best practices: perform deletes/archives in small batches to avoid locks (use LIMIT and repeat), log every automated action, handle related tables (cascade or archive related rows rather than orphaning), and keep backups before any destructive job. Where immediate deletion of personal data is legally required, perform a secure scrub and move audit records instead of blind deletes. These precautions give the automatic flow reliability and a safety net compared with manual removal.