that are loaded in memory. In the case of Apache 1.3, this call is blocking indefinitely. As a work around, this call is bypassed for Apache 1.3 build on NetWare only. This means that none of the loaded PHP extensions are unloaded. They will have to be manually unloaded before re-loading the Apache 1.3 again.
$d = new PDO('foobar'); // name has no : character
This will indirect via the entry "pdo.dsn.foobar" from the php.ini file,
so if you have:
pdo.dsn.foobar=sqlite::memory:
the above is equivalent to this:
$d = new PDO('sqlite::memory:');
which creates an in-memory sqlite db.
Add a uri: psuedo driver; it specifies the name of a resource that contains,
as its first line, the actual data source to connect to.
The resource can be a local file, or it can be any resource for which PHP
has a wrapper.
// loads connection data from the file "myapp"
$d = new PDO('uri:myapp');
// lets say that public.db.com has a read-only db open for the public
// their connection data is also published via the web:
// (not so great to resolve this on each request though...)
$d = new PDO('uri:http://public.db.com/pdo-connection-data');
Features:
- native prepare/execute and bound parameters.
- finally supports binary data (via bound parameter api)
- full unicode/utf-8 support
Missing:
- UDF functions
- authorizer hooks for safe_mode/open_basedir restrictions
You need to download, compile and install sqlite3 yourself; we're not bundling
it (at least, not yet).
We avoid the problem by using poll(2).
On systems without poll(2) (older bsd-ish systems, and win32), we emulate
poll(2) using select(2) and check for valid descriptors before attempting
to access them via the descriptor sets.
If an out-of-range descriptor is detected, an E_WARNING is raised suggesting
that PHP should be recompiled with a larger FD_SETSIZE (and also with a
suggested value).
Most uses of select(2) in the source are to poll a single descriptor, so
a couple of handy wrapper functions have been added to make this easier.
A configure option --enable-fd-setsize has been added to both the unix and
win32 builds; on unix we default to 16384 and on windows we default to 256.
Windows FD_SETSIZE imposes a limit on the maximum number of descriptors that
can be select()ed at once, whereas the unix FD_SETSIZE limit is based on the
highest numbered descriptor; 256 should be plenty for PHP scripts under windows
(the default OS setting is 64).
The win32 specific parts are untested; will do that now.
