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Possible Duplicate:
Is it okay to use array[key] in PHP?
Is there any significant different between
$test['car'] and $test[car]
Both produce same result.
In
$test[car],caris expected to be a constant. Constants are bare words without quotes or preceding$. If you do not have a constant namedcardefined, PHP will assume you meant'car'. That’s very bad behavior, but it is what it is. If you’d activate error reporting as you should during development, you’d see a lot of errors pointing this out.