I am just curious actually, the thought crossed my mind when I was thinking about doing something new and using arrays. But there's a possibility the array might even have to hold up to 100000 values - gasp! So, anyone know where I can get information like this?

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J de Silva
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I think array size depend at memory_limit setting in php.ini.
Default memory_limit = 8M. I look around for alittle bit tonight and this was what I found. I hope it helps

Later

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You must be careful, because it also depends on the limits of what php can handle for namespace memory handling because at extremely large sizes, reliability becomes questionable.

I fonud this today and I thought I would let you know.

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If builders built buildings the way programmers wrote programs, then the first woodpecker that came along would destroy civilization.

namespace memory? What is that?

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J de Silva
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I'm not that sure I was talking to someone about a week ago and thats what he told me. I'll try to found out wht he was talking about.

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If builders built buildings the way programmers wrote programs, then the first woodpecker that came along would destroy civilization.

Namespace memory. I think it's got to do with PHP's parsing algorithm. As it looks through your php script, when it sees something like
it places the string "variable" into a section of memory, along with a pointer to another bit of memory which stores "4".

The more memory your script eats up, the more dangerous it becomes that the PHP engine might bugger up & overwrite segments of memory already being used.

It's often a good idea to unset large arrays in your program once you've finished with them. PHP also supports multi-dimensional arrays, so a 10X10X10X10 4D array uses 10,000 slots, which can fill up memory very quickly.

Garth Farley

Thanks guys, I think I should stick with saving the data in a database then...

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J de Silva
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You also need to remember that large arrays can take a long time to execute and there is a time out limit which can be set in php.ini. The default is like 60 seconds, if a script hasn't completely run through in that time it bails.

...and it also has a memory limit, I believe the default is 4mb.

GF

I just looked in my php.ini and came up with:

memory_limit = 8M

I haven't changed this option so I guess in 4.3.0 8MB is the default...I don't know about older versions...