Description:
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Yes, I am running 5.2.4 (as shipped with Leopard) because the 5.2.5 OS 
X binary is not yet available; I figured I'd report this anyway since 
it doesn't appear to be something that was reported and fixed between 
5.2.4 and 5.2.5.

Macbook Pro, OS X 10.5.1, apache2 shipped with Leopard.

Apache loads the PHP module just fine, and runs fine. I'll leave it 
alone (working elsewhere on the machine or physically leaving the 
machine, doesn't matter), and several hours later I will return and 
try a PHP page that was working perfectly before, but now Apache just 
serves up the PHP source code for the page -- PHP has obviously quit 
or crashed; I don't know if it crashed an hour or two before while 
idle, or if it crashes/quits while loading the page. Apache is still 
fine, so is MySQL. Restarting Apache fixes the problem, and PHP is 
working again. I will wildly guess that this happens every 4-6 hours, 
from empirical data.

I've combed through all the console and system and app logs I can 
find, but I can't find any indication of what is going wrong. If 
someone can tell me where to look, or tell me how to change php.ini to 
enable more logging or somesuch, I'll be happy to do so. I will also 
try this with 5.2.5 as soon as that binary is available for OS X.

Reproduce code:
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n/a

Expected result:
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n/a

Actual result:
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n/a