The CachingIterator::getInnerIterator() function is an inbuilt function in PHP which is used to return the iterator sent to the constructor.
Syntax:
Iterator CachingIterator::getInnerIterator( void )
Parameters: This function does not accept any parameters.
Return Value: This function returns an object implementing the Iterator interface.
Below programs illustrate the CachingIterator::getInnerIterator() 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 $element; if($cachIt->hasNext()) { echo ", "; } } ?> |
Output:
G, e, e, k, 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 . " => " . $value; if($cachIt->hasNext()) { echo "\n"; } } ?> |
Output:
a => Geeks b => for c => Geeks d => Computer e => Science f => Portal
Reference: https://www.php.net/manual/en/cachingiterator.getinneriterator.php
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