PHP | Ds\Set contains() Function

The Ds\Set::contains() function is an inbuilt function in PHP which is used to check the given value exists in the set or not. This function compares the value and its type.

Syntax:

bool public Ds\Set::contains( $values )

Parameters: This function accepts a single or many values which need to check the value exist in the set or not.

Return value: If value exist in the set then it returns True otherwise returns False.

Below programs illustrate the Ds\Set::contains() function in PHP:

Program 1:

<?php

// Declare new Set
$set = new \Ds\Set(['G', 'e', 'e', 'k', 's', 5, 2, 7]);

// Use contains() function to check elements
// exist in the Set or not
var_dump($set->contains('G'));

var_dump($set->contains('k'));

var_dump($set->contains('p'));

var_dump($set->contains(7));

var_dump($set->contains('5'));

?>

Output:

bool(true)
bool(true)
bool(false)
bool(true)
bool(false)

Program 2:

<?php

// Declare new Set
$set = new \Ds\Set(['G', 'e', 'e', 'k', 's', 5, 2, 7]);

// Use contains() function to check elements
// exist in the Set or not
var_dump($set->contains('G', 'e'));

var_dump($set->contains('k', 'e', 7));

var_dump($set->contains('p', '1'));

var_dump($set->contains(7, 1));

var_dump($set->contains('5', 5));

?>

Output:

bool(true)
bool(true)
bool(false)
bool(false)
bool(false)

Reference: http://php.net/manual/en/ds-set.contains.php