Get value of previous array key

Get value of previous array key

So I tried doing this :

So I tried doing this :

$array = array('first'=>'111', 'second'=>'222', 'third'=>'333');


Hoping to get 111 but I get NULL. Why?

$array["second"] returns 222. Shouldn't we get 111 when we use PHP's prev() function?

How to get the previous value of an array if it exists using the key?

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