PHP | AppendIterator __construct() Function
The AppendIterator::__construct() function is an inbuilt function in PHP which is used to construct an AppendIterator.
Syntax:
public AppendIterator::__construct( void )
Parameters: This function does not accept any parameters.
Return Value: This function does not return any value.
Below programs illustrate the AppendIterator::__construct() function in PHP:
Program 1:
<?php   // Declare an ArrayIterator $arr1 = new ArrayIterator(array('G', 'e', 'e', 'k', 's')); $arr2 = new ArrayIterator(array('f', 'o', 'r')); $arr3 = new ArrayIterator(array('G', 'e', 'e', 'k', 's'));   // Create a new AppendIterator $itr = new AppendIterator; $itr->append($arr1); $itr->append($arr2); $itr->append($arr3);   // Display the result foreach ($itr as $key => $val) {     echo $key . " => " . $val . PHP_EOL; }   ?> |
Output:
0 => G 1 => e 2 => e 3 => k 4 => s 0 => f 1 => o 2 => r 0 => G 1 => e 2 => e 3 => k 4 => s
Program 2:
<?php   // Declare an ArrayIterator $arr1 = new ArrayIterator(array("Geeks", "for", "Geeks")); $arr2 = new ArrayIterator(array("Computer", "Science", "Portal"));   // Create a new AppendIterator $itr = new AppendIterator; $itr->append($arr1); $itr->append($arr2);   // Display the result foreach ($itr as $key => $val) {     echo $key . " => " . $val . PHP_EOL; }   ?> |
Output:
0 => Geeks 1 => for 2 => Geeks 0 => Computer 1 => Science 2 => Portal
Reference: https://www.php.net/manual/en/appenditerator.construct.php
