4.3.0 |
It's possible to open database files over network connection. However
in cases a socket connection will be used (as with http or ftp) the
connection will be locked instead of the resource itself. This is important
to know since in such cases locking is simply ignored on the resource
and other solutions have to be found.
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4.3.0 |
Locking and the mode
modifiers "l", "d", "-"
and "t" were added.
In previous PHP versions, you must use semaphores to guard against
simultaneous database access for any database handler with the exception
of GDBM. See System V semaphore support.
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before 4.3.5 |
open mode 'c' is broken for several internal handlers and truncates
the database instead of appending data to an existent database.
Also dbm and ndbm fail on mode 'c' in typical configurations (this
cannot be fixed).
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