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PHP | Ds\Pair copy() Function

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The Ds\Pair::copy() function is an inbuilt function in PHP which is used to return a copy of Pair elements. Syntax:

 Ds\Pair::copy( void )

Parameters: This function does not accept any parameters. Return Value: This function returns a shallow copy of the pair element. Below programs illustrate the Ds\Pair::copy() function in PHP: Program 1: 

php

<?php
 
// Create new Pair
$pair = new \Ds\Pair("G", "GeeksforGeeks");
 
// Display the pair element
print_r($pair);
 
// Use copy() function
$pair->copy();
 
echo "Copied pair elements:\n";
 
// Display the pair element
print_r($pair);
 
?>

                    
Output:
Ds\Pair Object
(
    [key] => G
    [value] => GeeksforGeeks
)
Copied pair elements:
Ds\Pair Object
(
    [key] => G
    [value] => GeeksforGeeks
)

Program 2: 

php

<?php
 
// Create new Pair
$pair = new \Ds\Pair(["G", "GeeksforGeeks"], [1, 2]);
 
// Display the pair element
var_dump($pair);
 
// Use copy() function
$pair->copy();
 
echo "Copied pair elements:\n";
 
// Display the pair element
var_dump($pair);
 
?>

                    
Output:
object(Ds\Pair)#1 (2) {
  ["key"]=>
  array(2) {
    [0]=>
    string(1) "G"
    [1]=>
    string(13) "GeeksforGeeks"
  }
  ["value"]=>
  array(2) {
    [0]=>
    int(1)
    [1]=>
    int(2)
  }
}
Copied pair elements:
object(Ds\Pair)#1 (2) {
  ["key"]=>
  array(2) {
    [0]=>
    string(1) "G"
    [1]=>
    string(13) "GeeksforGeeks"
  }
  ["value"]=>
  array(2) {
    [0]=>
    int(1)
    [1]=>
    int(2)
  }
}

Reference: https://www.php.net/manual/en/ds-pair.copy.php



Last Updated : 20 Mar, 2023
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