execute(' ALTER TABLE prm_uploads CHANGE COLUMN upload_name upload_name VARCHAR(255) NOT NULL COLLATE "utf8mb4_unicode_520_ci" AFTER upload_bump, CHANGE COLUMN upload_type upload_type VARCHAR(255) NOT NULL COLLATE "ascii_general_ci" AFTER upload_name; '); $conn->execute(' ALTER TABLE prm_applications CHANGE COLUMN app_name app_name VARCHAR(50) NOT NULL COLLATE "utf8mb4_unicode_520_ci" AFTER app_id, CHANGE COLUMN app_size_limit app_size_limit INT(11) UNSIGNED NOT NULL AFTER app_created, CHANGE COLUMN app_allow_size_multiplier app_allow_size_multiplier TINYINT(4) UNSIGNED NOT NULL DEFAULT "0" AFTER app_size_limit, CHANGE COLUMN app_expiry app_expiry INT(11) UNSIGNED NOT NULL AFTER app_allow_size_multiplier; '); } }