PHP | AppendIterator append() Function

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The AppendIterator::append() function is an inbuilt function in PHP which is used to append an iterator.

Syntax:

void AppendIterator::append( Iterator $iterator )

Parameters: This function accepts single parameter $iterator which holds the iterator to append.

Return Value: This function does not return any value.

Below programs illustrate the AppendIterator::append() 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 $val) { 
    echo $val; 
} 
  
?> 

Output:

zambiatek

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 $val) { 
    echo $val; 
} 
  
?> 

Output:

zambiatekComputerSciencePortal

Reference: https://www.php.net/manual/en/appenditerator.append.php

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