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PHP CachingIterator next () function

Syntax:
void CachingIterator::next (void)
Parameters:This function takes no parameters.Returned value:This function does not return any value.The following programs illustrate the CachingIterator function::next() in PHP:Program 1:  
// Declare the 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(); }  
?>
Exit:
G es
Program 2:  
// Declare 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(). "" ; $cachIt -> next(); }  
?>
Exit:
a = > Geeks c = > Geeks e = > Science
Link: https://www.php.net /manual/en/cachingiterator.next.php

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