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Crashing PHP in one easy lesson (aka WTF?)
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Arantor

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Crashing PHP in one easy lesson (aka WTF?)
« on February 24th, 2013, 04:07 PM »
So I'm working on the language editor, and moved its templates into its own handy dandy file, ManageLanguages.template.php. And as such I'm removing the old code I don't want.

But if I remove this one div from it, see before/after shots, so you can see what was removed - just removing that div on line 319 will not generate a 500, it will simply force PHP to abort entirely with just this in the Apache error log:
Code: [Select]
[Sun Feb 24 15:03:23 2013] [notice] Parent: child process exited with status 255 -- Restarting.

I have no idea WTF is going on.

📎 crashing_php_before.png - 44.28 kB, 844x538, viewed 268 times.

📎 crashing_php_after.png - 41.99 kB, 839x527, viewed 246 times.

Re: Crashing PHP in one easy lesson (aka WTF?)
« Reply #1, on February 24th, 2013, 04:10 PM »
Weirder still, if I drop the break between the two and make it one longer echo (there used to be something in the middle that was conditional, but now removed), it works fine.
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Nao

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Re: Crashing PHP in one easy lesson (aka WTF?)
« Reply #2, on February 24th, 2013, 05:28 PM »
Have you tried turning it off and on again?™

Have you tried turning off gzipping?

Is this the default php.ini in WampServer? (The one in the Apache bin folder.)

Arantor

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Re: Crashing PHP in one easy lesson (aka WTF?)
« Reply #3, on February 24th, 2013, 05:38 PM »
HELLO THIS IS IT HAVE YOU TRIED TURNING IT OFF AND ON AGAIN?[1]

I stopped and restarted Apache, but I didn't fuss with gzip or anything like that, and yes it is the default php.ini. It isn't gzip related because it's causing PHP to die before it gets back to Apache.

I have no idea what causes it to fail but since I removed more of the surrounding stuff, it's fine. I've seen odd stuff like this before and I think it's just a random parser bug somewhere. :/ I'm not on the current PHP release, this is 5.3.10.
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Nao

  • Dadman with a boy
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Re: Crashing PHP in one easy lesson (aka WTF?)
« Reply #4, on February 24th, 2013, 05:50 PM »
I thought it could be due to gzip because it happened to me years ago, and once I disabled mod_gzip (or was it the equivalent setting in PHP...), it started working again...

Oh, now I remember, it didn't crash PHP, it just 500'ed my Apache. Don't bother.

It's really odd...

Arantor

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Re: Crashing PHP in one easy lesson (aka WTF?)
« Reply #5, on February 24th, 2013, 05:52 PM »
I know there were issues a bit back with using compression and it interfering with Xcache and Xdebug, not sure if they're still issues or not, I haven't tried using the profiler lately.

But this is very unusual, hence the topic. I can only assume a parser bug, but I've seen moved on past it, heh.
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