Bir dizi Verilen:
$a = array(
'abc',
123,
'k1'=>'v1',
'k2'=>'v2',
78,
'tt',
'k3'=>'v3'
);
With its internal pointer on one of its elements, how do I insert an element after the current element? And how do I insert an element after a key-known element, say 'k1'?
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