PHP | CachingIterator next() Function
The CachingIterator::next() function is an inbuilt function in PHP which is used to move the iterator to the forward.
Syntax:
void CachingIterator::next( void )
Parameters: This function does not accept any parameters.
Return Value: This function does not return any value.
Below programs illustrate the CachingIterator::next() function in PHP:
Program 1:
<?php      // Declare an array $arr = array('G', 'e', 'e', 'k', 's');      // Create a new CachingIterator $cachIt = new CachingIterator(     new ArrayIterator($arr),     CachingIterator::FULL_CACHE );   foreach($cachIt as $element) {     echo $cachIt->current() . " ";     $cachIt->next(); }   ?> |
Output:
G e s
Program 2:
<?php      // Declare an ArrayIterator $arr = array(     "a" => "Geeks",     "b" => "for",     "c" => "Geeks",     "d" => "Computer",     "e" => "Science",     "f" => "Portal");    // Create a new CachingIterator $cachIt = new CachingIterator(     new ArrayIterator($arr),     CachingIterator::FULL_CACHE );   foreach($cachIt as $key => $value) {     echo $key . " => " . $cachIt->current() . "\n";     $cachIt->next(); }   ?> |
Output:
a => Geeks c => Geeks e => Science
Reference: https://www.php.net/manual/en/cachingiterator.next.php
