PHP | AppendIterator current() Function

Last Updated : 21 Nov, 2019
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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 
<?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 
<?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

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