PHP | Ds\Pair __construct() Function
Last Updated :
30 Jul, 2019
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The Ds\Pair::__construct() function is an inbuilt function in PHP which is used to create a new instance.
Syntax:
php
php
public Ds\Pair::__construct( $key, $value )Parameters: This function accepts two parameters as mentioned above and described below:
- $key: This parameter holds the key of the pair element.
- $value: This parameter holds the value of the pair element.
<?php
// PHP program to illustrate the
// Ds\Pair::__construct() function
// Declare a new pair
$pair = new \Ds\Pair();
// Display the pair elements
print_r($pair);
// Creating another pair
$pair = new \Ds\pair(
["1", "2", "3"],
["Geeks", "for", "Geeks"]
);
// Display the pair elements
print_r($pair);
?>
<?php // PHP program to illustrate the // Ds\Pair::__construct() function// Declare a new pair $pair = new \Ds\Pair(); // Display the pair elements print_r($pair); // Creating another pair $pair = new \Ds\pair( ["1", "2", "3"], ["Geeks", "for", "Geeks"]);// Display the pair elements print_r($pair); ?>
Output:
Program 2:
Ds\Pair Object
(
[key] =>
[value] =>
)
Ds\Pair Object
(
[key] => Array
(
[0] => 1
[1] => 2
[2] => 3
)
[value] => Array
(
[0] => Geeks
[1] => for
[2] => Geeks
)
)
<?php
// PHP program to illustrate the
// Ds\Pair::__construct() function
// Creating a pair
$pair = new \Ds\pair(
["a", "b", "c"],
["10", "2", "30"]
);
// Display the pair elements
var_dump($pair);
?>
<?php // PHP program to illustrate the // Ds\Pair::__construct() function// Creating a pair $pair = new \Ds\pair( ["a", "b", "c"], ["10", "2", "30"]);// Display the pair elements var_dump($pair); ?>
Output:
Reference: https://www.php.net/manual/en/ds-pair.construct.php
object(Ds\Pair)#1 (2) {
["key"]=>
array(3) {
[0]=>
string(1) "a"
[1]=>
string(1) "b"
[2]=>
string(1) "c"
}
["value"]=>
array(3) {
[0]=>
string(2) "10"
[1]=>
string(1) "2"
[2]=>
string(2) "30"
}
}
