PHP | Ds\Map __construct() Function
The Ds\Map::__construct() function is an inbuilt function in PHP which is used to creates a new instance.
Syntax:
public Ds\Map::__construct( $values )
Parameter: This function accepts a single parameter $values which holds the traversable object or array to use initial values.
Below programs illustrate the Ds\Map::__construct() function in PHP:
Program 1:
<?php
$map = new \Ds\Map();
print_r( $map );
$map = new \Ds\Map([
"1" => "Geeks" ,
"2" => "for" ,
"3" => "Geeks"
]);
print_r( $map );
?>
|
Output:
Ds\Map Object
(
)
Ds\Map Object
(
[0] => Ds\Pair Object
(
[key] => 1
[value] => Geeks
)
[1] => Ds\Pair Object
(
[key] => 2
[value] => for
)
[2] => Ds\Pair Object
(
[key] => 3
[value] => Geeks
)
)
Program 2:
<?php
$map = new \Ds\Map([ "1" => "10" ,
"2" => "20" , "3" => 30]);
print_r( $map );
$map = new \Ds\Map([1 => "Welcome" ,
2 => "to" , 3 => "GeeksforGeeks" ]);
print_r( $map );
?>
|
Output:
Ds\Map Object
(
[0] => Ds\Pair Object
(
[key] => 1
[value] => 10
)
[1] => Ds\Pair Object
(
[key] => 2
[value] => 20
)
[2] => Ds\Pair Object
(
[key] => 3
[value] => 30
)
)
Ds\Map Object
(
[0] => Ds\Pair Object
(
[key] => 1
[value] => Welcome
)
[1] => Ds\Pair Object
(
[key] => 2
[value] => to
)
[2] => Ds\Pair Object
(
[key] => 3
[value] => GeeksforGeeks
)
)
Reference: https://www.php.net/manual/en/ds-map.construct.php
Last Updated :
20 Aug, 2019
Like Article
Save Article
Share your thoughts in the comments
Please Login to comment...