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