For some reason when removing items from an array I am left with keys like 0, 2, 3, 4, 6, 9 instead of 0, 1, 2, 3, 4, 5. So I am trying to figure out why, and what I can do to fix it without sorting everything via sort() as that will put stuff in order. I just want to re-key in a matter of speaking.
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3 Answers
Use array_values() to get the values of the original array and return them to a new array. That new array will contain new numerical keys.
$new_array = array_values($old_array);
1 Comment
ThorSummoner
I have to assume this doesn't work when an array key can potentially be associative, and you want to know about thouse.
You should use array_splice() to remove elements from your array so it changes the key the way you wish at the same time.
You have to be careful with array_values() since it will not (or at least might not) work, because it may re-order your numeric indexes. If you added the value at index 0 after the value at index 3, the value at index 0 will be placed at the end of the array returned by array_values(), while it appears first in yours.
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Since the keys don't necessarily matter, you can just run your final result array through array_values(). It leaves all the values in the order they already were, resetting all the keys to sequential numeric values.
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Sebas
It's actually false, someone found out that the order is not the order of appearance but the foreach order that is preservered: php.net/manual/fr/function.array-values.php#114941