Description:
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In the following line in php.ini

memory_limit = 8M      ; Maximum amount of memory a script may consume (8MB)

the comment mentions "8MB" but if one really writes "memory_limit = 8MB" then apache would hang when restarting even though it says:

/etc/init.d/apache2 start
 * Starting apache 2.0 web server...     [ ok ]

I'm writing this bug report because I've just experienced this problem and while fixing it, I found out that many others have had the same issue.



Reproduce code:
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replace memory_limit = 8M with
memory_limit = 8MB

Expected result:
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- no misleading comment so that one doesn't even attempt to write "MB" instead of M
- don't say "[ok]" but "[fail]" when restarting apache with the mention that "8MB" is not known, assuming "8 bytes" or "did you mean "8M"? (ok, that would be an apache bug, but I think php should provide this failure message to apache, doesn't it?)
- write more verbose error message to apache error.log


Actual result:
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apache hangs when restarting, consuming a lot of CPU and only writing this to error.log
Allowed memory size of 8 bytes exhausted (tried to allocate 9 bytes)