Nevtlathiel,
you just have to maintain an array and push the key to it every time you add a key

It is actually a bit more complicated than that though none of the problems can't be overcome. If you delete a key you either need to splice out the corresponding array element or do an exists test when looping over the array. If you change a key's value should it then go to the end or stay put? I am not saying that it is isn't that simple in specific cases, but in general it is usually better to just use an already made wheel:

Cheers - L~R

In reply to Re^3: hash unorderly output by Limbic~Region
in thread hash unorderly output by whatluo

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