PHP | Ds\Map count() Function
Last Updated :
20 Aug, 2019
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The Ds\Map::count() function is an inbuilt function in PHP which is used to count the number of elements present in the Map. It also referred to the size of the Map.
Syntax:
php
php
int public Ds\Map::count()Parameters: This function does not accept any parameter. Return value: This function returns the number of elements present in the Map. Below programs illustrate the Ds\Map::count() function in PHP: Program 1:
<?php
// PHP program to illustrate the count()
// function of Ds\map
// Creating a Map
$map = new \Ds\Map([
"1" => "Geeks",
"2" => "for",
"3" => "Geeks"
]);
// Display the map elements
print_r($map);
echo "Number of elements present in map: ";
print_r($map->count());
?>
<?php // PHP program to illustrate the count() // function of Ds\map // Creating a Map $map = new \Ds\Map([ "1" => "Geeks", "2" => "for", "3" => "Geeks"]); // Display the map elementsprint_r($map); echo "Number of elements present in map: ";print_r($map->count());?>
Output:
Program 2:
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
)
)
Number of elements present in map: 3
<?php
// PHP program to illustrate the count()
// function of Ds\map
// Creating a Map
$map = new \Ds\Map(["1" => "10",
"2" => "20", "3" => 30, "4" => 40]);
// Print map elements
print_r($map);
echo "Number of elements present in map: ";
print_r($map->count());
echo "\n";
// Creating another Map
$map = new \Ds\Map([1 => "Welcome",
2 => "to", 3 => "GeeksforGeeks"]);
// Print map elements
print_r($map);
echo "Number of elements present in map: ";
print_r($map->count());
?>
<?php // PHP program to illustrate the count() // function of Ds\map // Creating a Map $map = new \Ds\Map(["1" => "10", "2" => "20", "3" => 30, "4" => 40]); // Print map elementsprint_r($map); echo "Number of elements present in map: ";print_r($map->count());echo "\n";// Creating another Map $map = new \Ds\Map([1 => "Welcome", 2 => "to", 3 => "GeeksforGeeks"]); // Print map elementsprint_r($map); echo "Number of elements present in map: ";print_r($map->count());?>
Output:
Reference: https://www.php.net/manual/en/ds-map.count.php
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
)
[3] => Ds\Pair Object
(
[key] => 4
[value] => 40
)
)
Number of elements present in map: 4
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
)
)
Number of elements present in map: 3
