PHP | AppendIterator current() Function

The AppendIterator::current() function is an inbuilt function in PHP which is used to get the current value.

Syntax:

mixed AppendIterator::current( void )

Parameters: This function does not accept any parameters.

Return Value: This function returns the current value if it is valid or NULL otherwise.

Below programs illustrate the AppendIterator::current() function in PHP:

Program 1:

<?php

// Declare an ArrayIterator
$arr1 = new ArrayIterator(array('G', 'e', 'e', 'k', 's'));

// Create a new AppendIterator
$itr = new AppendIterator;

// Append the ArrayIterator element
$itr->append($arr1);

// Display the current element of iterator
var_dump($itr->current());

// Use AppendIterator::next() function to
// move into next element
$itr->next();

// Display the current element of iterator
var_dump($itr->current());

?>

Output:

string(1) "G"
string(1) "e"

Program 2:

<?php

// Declare an ArrayIterator
$arr1 = new ArrayIterator(array("Geeks", "for", "Geeks"));
$arr2 = new ArrayIterator(array("Computer", "Science", "Portal"));

// Create a new AppendIterator
$itr = new AppendIterator;
$itr->append($arr1);
$itr->append($arr2);

foreach ($itr as $key => $val) {
    var_dump($itr->current());
}

?>

Output:

string(5) "Geeks"
string(3) "for"
string(5) "Geeks"
string(8) "Computer"
string(7) "Science"
string(6) "Portal"

Reference: https://www.php.net/manual/en/appenditerator.current.php