Hi,
There is a way to implement in some future release of PHP (without hurting
performance), but it's not in the scope of 5.3.
Each namespace should have a meta file listing all symbols present in it.
The parser loads that static file at parse time and resolves all naming at
parse time, leaving autoload to figure out only where a symbol is, not
whether it's present.
I've not noticed great interest in this approach last time I offered it.
Regards,
Stan Vassilev
Hi,
So definetly I need to prepend the \ or declare the "usage" of the
class at the beginning in order to use classes declared in the global
scope? This means SPL classes and 3rd-party classes.
Is there a way to import all the SPL classes at once? ;) (use SPL\*,
use PDO\*).. just wondering.
Thanks
On Tue, Mar 31, 2009 at 5:38 PM, Stan Vassilev | FM
<sv_for...@fmethod.com> wrote:
Hi,
Try this:
use PDO;
Regards,
Stan Vassilev
-------------------------------------------------------------------------------------
Hello,
I've been writing in the last days a web application on PHP 5.3 (beta1
although RC was released) cause of all the goodies it brings,
specially the namespaces, however I've been a bit stuck and
*surprised* that the only way to use a PHP class (like Iterators, PDO,
etc) is to call them from the global scope, this means: adding the \
at the beginning at the class.
My short question is: is it the only possible way? That means that I
need to be very careful when invoking PHP classes, like PDO? Currently
when I do:
$pdo = new PDO(..);
throws an error if I use it from one of "my" namespaced-classes, the
error
is:
Fatal error: Class 'MyNameSpace\PDO' not found in /foo/bar/foome.php
throws an error, since spl_autoload can't find the 'MyNameSpace\PDO'
class. And yes I know I could create a class that extends from it, but
I don't think that's the best idea, just imagine the number of classes
I just need to create to cover the PHP classes I plan to use.
So, are there other workarounds for this? Like an autoload function
for PHP objects created inside a non-global scope (MyNameSpace)? I was
reading a thread about namespaces of last year and someone suggested
something like:
if (($p = strrpos($class, '\\')) !== false) {
$name = substr($class, $p+1);
if (class_exists("\\$name")) {
spl_autoload("\\$name");
// or use "\\$name";
return;
}
}
However that wont work cause: 1) one can't use "use" at the middle of
a PHP files, it needs to be used at the beginning afaik, 2)
spl_autoload will definetly find the class I'm passing (supposing PDO)
but it's useless since what is "expected" by PHP is a MyNameSpace\PDO
class. Probably I could use Reflection but I'm not sure if that's the
best idea...
Any other plans to use PHP objects (SPL, PDO, etc) inside non-global
namespaces? Maybe a "PHP" namespace that spl_autoload could catch,
like:
use PHP;
use PHP\SPL;
use PHP\ArrayObject;
(this idea was given in a previous thread :-))
.. or perhaps having something like spl_namespace_alias, when someone
can use inside their autoload functions:
spl_namespace_alias('/PDO', $classname); // where $classname is the
parameter received by the __autoload functions.
I don't have any problems to prepend the "\" but I think PHP should
catch that stuff automatically as it does with constants and
functions, no? Find a bit annoying to write the "\" to PHP classes I
want to use imho.
Thanks!
--
Pablo Fischer (pablo [arroba/at] pablo.com.mx)
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