Creates a PHP mount handler backed by an OPFS directory.
During MEMFS-to-OPFS setup, journaling starts before the initial copy so
writes made during setup are captured. If copying or reporting its progress
fails, it discards the incomplete mount without replacing the original
setup error. Successful mounts use the retryable final-flush contract of
DirectoryHandleMount.
Creates a PHP mount handler backed by an OPFS directory.
During MEMFS-to-OPFS setup, journaling starts before the initial copy so writes made during setup are captured. If copying or reporting its progress fails, it discards the incomplete mount without replacing the original setup error. Successful mounts use the retryable final-flush contract of
DirectoryHandleMount.