Description
Legacy PHP 8.0 applications can access simple file-backed database formats through a common API. This runtime extension is used by older scripts, caches, indexes, and compatibility layers that store key-value data outside a full database server. It is dependency-only and has no separate launcher; PHP code uses it after the extension is enabled. File permissions, locking, backups, and trusted paths matter because local database files can contain private records and can be damaged by concurrent writes.