Bug #66066 [Com]: opcache_compile_file partially execute file and output errors
Edit report at https://bugs.php.net/bug.php?id=66066&edit=1
ID: 66066
Comment by: edublogeducation at gmail dot com
Reported by: geompse at gmail dot com
Summary: opcache_compile_file partially execute file and
output errors
Status: Verified
Type: Bug
Package: opcache
Operating System: Debian 3.8.13
PHP Version: 5.5.5
Block user comment: N
Private report: N
New Comment:
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Previous Comments:
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[2021-06-21 16:36:29] cmb@php.net
> Practical use : updater script
> - overwrite files with new ones
> - force opcache recompilation
Generally a bad idea, since that causes SHM fragmentation, and
should better be avoided.
While compiling a file which would redefine a function is neither
supported nor desireable, in my opinion, the behavior is a bug:
execution proceedes after the fatal error (due to zend_try), but
the respective members of core_globals (e.g. last_error_type) are
not properly reset, so that the script terminates with an exit
code != 0.
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[2014-01-14 11:43:59] geompse at gmail dot com
Please open your mind, I am talking about scopes, contexts and so on.
This is ugly but works :
system('php -r
"opcache_compile_file(\''.__FILE__.'\')"');
This is clean but does not work :
opcache_compile_file(__FILE__);
(1) I don't see where the PHP architecture stops you from adding to the documentation
"Notice : It will be compiled in the same compilation context"
(2) It might be difficult/impossible to actually use another context, due to the architecture's
limitations. You're the reference there.
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[2014-01-14 11:31:24] Terry at ellisons dot org dot uk
Let's pick apart the definition of opcache_compile_file()
* Compiles a PHP script
* Cache a PHP script
* Do not execute it.
Step one in this process is that the script must compile successfully. The architecture of PHP is
such that (i) statically compiled (that is at the outer level and not in "if" or other
blocks) are bound at compile time. (ii) You cannot redefine an existing class or function within a
compile. This will result in a compile error. That is what you doing and are getting exactly the
errors that you should expect. We can't change this without changing the Zend Engine in ways
that will cause all sorts of compatability breaks.
So the function does what it says, just not what you'd like it to do.
You seem confused as to the architecture of PHP and seem to need help here. I've offered to
help you understand your requirements and work out a way that they can be met within PHP
architectural constraints on a more appropriate site, as this bugs.php.net is not a support forum.
Clearly it is up to you whether you chose to take up this offer.
This sort of "how to" dialogue doesn't belong here. My last comment on this thread.
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[2014-01-14 10:55:31] geompse at gmail dot com
There is an issue, something is not doing what it say it does.
There are obvious solutions :
- make it not do that (= let it do it silently)
- say it does what it does (= update documentation)
- add option to handle it cleanly (= add boolean somewhere and use it)
There are more specific solutions :
- cleanup the whole PHP "Zend" code :)
- make OPCache run in a different context (nb : not only a different scope)
- other...
You are telling me that this is not a bug (undocumented behavior is expected) and that instead of
using the bug report system (bugs.php.net) I must talk with the StackOverflow community to convince
them of telling you this is a bug ?
I won't. You may not solve this bug and let other PHP developers get in troubles.
I filled in this report for the PHP community. Live long and prosper.
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[2014-01-13 14:31:50] Terry at ellisons dot org dot uk
Geompse, this may be counter-intuitive behaviour, but this is PHP that we're talking about here
:-) What you are trying to do is hitting artefacts of Zend engine constraints rather than OPcache
ones. You will get into just the same sort of problems if you try to do an include __FILE__; if
your file embeds statically declared functions or classes.
The PHP bugrep system is a poor place to have this discussion. Why not post a Q to StackOverflow
explaining what you are trying to do, and we can have the discussion on a forum more suited to this?
If we distill out of that some specific issue that needs raising here, then there is more chance of
it getting actioned that way. Terry
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