The CachingIterator::__construct() function is an inbuilt function in PHP which is used to construct a new CachingIterator object for the iterator.
Syntax:
public CachingIterator::__construct( Iterator $iterator, int $flags = self::CALL_TOSTRING )
Parameters: This function accepts two parameters as mentioned above and described below:
- $iterator: This parameter holds the iterator of cache.
- $flags: This parameter holds the bitmask of flags.
Return Value: This function does not return any value.
Below programs illustrate the CachingIterator::__construct() 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 );    // Display the result foreach($cachIt as $element) {     echo $element . " "; }     ?> |
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 );   // Display the result foreach($cachIt as $key => $value) {     echo $key . " => " . $value . "\n"; }     ?> |
Output:
a => Geeks b => for c => Geeks d => Computer e => Science f => Portal
Reference: https://www.php.net/manual/en/cachingiterator.construct.php
