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PHP | Ds\Pair copy() Function

  • Last Updated : 30 Jul, 2019

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

Syntax:

Ds\Pair 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 
  
// 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 
  
// 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




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