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
