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PHP | AppendIterator __construct() Function
  • Last Updated : 21 Nov, 2019

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:

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<?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;
}
  
?>

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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:

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<?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;
}
  
?>

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Output:

0 => Geeks
1 => for
2 => Geeks
0 => Computer
1 => Science
2 => Portal

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




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