PHP | CachingIterator current() Function

PHP | AppendIterator rewind() Function

Last Updated : 21 Nov, 2019

The AppendIterator::rewind() function is an inbuilt function in PHP which is used to rewind to the first element of the first inner Iterator.

Syntax:

void AppendIterator::rewind( void )

Parameters: This function does not accept any parameters.

Return Value: This function does not return any value.

Below programs illustrate the AppendIterator::rewind() function in PHP:

Program 1:

<?php 
   
// Declare an ArrayIterator 
$arr1 = new ArrayIterator(array("Geeks", "for", "Geeks")); 
   
// Create a new AppendIterator 
$itr = new AppendIterator; 
$itr->append($arr1); 
  
// Using rewind function  
$itr->rewind();  
    
// Get current data   
var_dump($itr->current());  
    
// Move on to next object  
$itr->next();  
    
// Get current data   
var_dump($itr->current());  
    
// Again using rewind function  
$itr->rewind();  
    
// Get current data   
var_dump($itr->current());  
   
?> 

Output:

string(5) "Geeks"
string(3) "for"
string(5) "Geeks"

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); 
  
// Using rewind function  
$itr->rewind();  
    
while($itr->valid()) {  
    var_dump($itr->current());  
        
    // Moving to next element  
    $itr->next();  
}  
   
?> 

Output:

string(5) "Geeks"
string(3) "for"
string(5) "Geeks"
string(8) "Computer"
string(7) "Science"
string(6) "Portal"

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

PHP | CachingIterator current() Function

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