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What does a sum mean in an array?


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Hello, I'm trying to understand what this line of code means, but I can't figure out what value it takes inside the bracket

$i = 1
$aArray[$i + 2]


Because I don't think it is equal to $aArray[3] because I did tests and it is not the value of index 3. In other words, send the value of index 3 and it is not the value that I get in relation to $i + 2

Edited by RuHor
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