Hi Tim,
I have no problem running foo.php and test.php that you sent in hphpi, but
also it compiles and run without any problems with hphp. What command
exactly do you use to compile and then execute?
Inez
On Sun, Apr 3, 2011 at 5:38 PM, Tim Starling tstarl...@wikimedia.orgwrote:
On 03/29/2011 10:48 AM, Platonides wrote:
I was expecting this the week hip-hop hit. What would be required to
target hip-hop? How does that differ from working from Zend?
I've explored the issues and made some initial changes to my working
copy. I'm now waiting for it to compile, and once it's tested, I'll
commit it.
There is a list of things that differ here:
https://github.com/facebook/hiphop-php/blob/master/doc/inconsistencies
Unfortunately it seems to leave out the most important differences.
It seems incredible, and I'm hoping someone will correct me, but it
seems that file inclusion has to be completely different in HipHop.
Even the simplest script won't work. I put this in foo.php:
?php
class Foo {
static function bar() {
print Hello\n;
}
}
?
And this in test.php:
?php
include 'foo.php';
Foo::bar();
?
This gives HipHop Fatal error: Cannot redeclare class Foo at
runtime. All classes which are compiled exist from startup, and trying
to declare them produces this error. This means that it is no longer
possible to mix class and function declarations with code we want to
execute. My working copy has fixes for the most important instances of
this, such as in Setup.php and WebStart.php.
There are two exceptions to this. One is the interpreter. HipHop has
an interpreter, which is used for eval() and for include() on a file
with a fully-qualified path. We can use this to allow us to change
LocalSettings.php without recompiling.
If you want to do include() and have it execute compiled code, you
need to use a path which is relative to the base of the compiled code.
My working copy has some functions which allow this to be done in a
self-documenting way.
The other exception is volatile mode, which unfortunately appears to
be completely broken, at least in the RPMs that I'm using. It's so
broken that calling class_exists() on a literal string will break the
class at compile time, making it impossible to use, with no way to
repair it. My working copy has a wrapper for class_exists() which
doesn't suffer from this problem.
Another undocumented difference is that HipHop does not use php.ini or
anything like it, so most instances of ini_get() and ini_set() are
broken. The functions exist, but only have stub functionality. HipHop
has its own configuration files, but they aren't like php.ini.
When I'm ready to write all this up properly, the following page will
appear on mediawiki.org:
http://www.mediawiki.org/wiki/HipHop
-- Tim Starling
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