SplDoublyLinkedList::offsetExists
(PHP 5 >= 5.3.0, PHP 7, PHP 8)
SplDoublyLinkedList::offsetExists โ ๆๅฎใใ $index ใๅญๅจใใใใฉใใใ่ฟใ
ใใฉใกใผใฟ
index-
่ชฟในใใใคใณใใใฏในใ
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