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
