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PHP SplDoublyLinkedList getIteratorMode () function

Syntax:
int SplDoublyLinkedList::getIteratorMode (void)
Parameters:This function takes no parameters.Return Value:This function returns various modes and flags that affect iteration.The programs below illustrate the SplDoublyLinkedList::getIteratorMode() function in PHP:Program 1:  
// Declare an empty SplDoublyLinkedList $list = new SplDoublyLinkedList();  
// Add item to SplDoublyLinkedList $list -> setIteratorMode (SplDoublyLinkedList::IT_MODE_FIFO);  
// Use the getIteratorMode() function $mode = $list -> getIteratorMode(); var_dump ( $mode );  
// Add item to SplDoublyLinkedList $list -> setIteratorMode (SplDoublyLinkedList::IT_MODE_DELETE);  
// Use the getIteratorMode() function $mode = $list -> getIteratorMode(); var_dump ( $mode );  
// Add item to SplDoublyLinkedList $list -> setIteratorMode (SplDoublyLinkedList::IT_MODE_LIFO);  
// Use the getIteratorMode() function $mode = $list -> getIteratorMode(); var_dump ( $mode );  
?>
Exit:
int (0 ) int (1) int (2)
Program 2:  
// Declare an empty SplDoublyLinkedList $list = new SplDoublyLinkedList ( );  
// Add item to SplDoublyLinkedList $list -> setIteratorMode (SplDoublyLinkedList::IT_MODE_FIFO | SplDoublyLinkedList::IT_MODE_DELETE | SplDoublyLinkedList::IT_MODE_LIFO); $mode = $list -> getIteratorMode(); var_dump ( $mode & amp; SplDoublyLinkedList::IT_MODE_FIFO); var_dump ( $mode & amp; SplDoublyLinkedList::IT_MODE_LIFO); var_dump ( $mode & amp; SplDoublyLinkedList::IT_MODE_DELETE); var_dump ( $mode & amp; SplDoublyLinkedList::IT_MODE_KEEP);  
?>
Exit:
int (0 ) int (2) int (1) int (0)
Link: https://www.php.net/manual/en/spldoublylinkedlist.getiteratormode.php

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