PHP - Ds Deque contains() Function

Ds\Deque::contains() function can determine if the deque contains given values.

Syntax

public bool Ds\Deque::contains([ mixed $...values ] )

Ds\Deque::contains() function can determine if the deque contains all values.

Ds\Deque::contains() function can return false if any of the provided values are not in the deque or true otherwise.

Example 1

<?php 
   $deque = new \Ds\Deque([1, 2, 3, 4, 5]); 
  
   echo("The elements in the deque: \n"); 
   var_dump($deque); 
  
   echo("\n Checking for an element in the deque: \n"); 
   var_dump($deque->contains(2)); 
?>

Example 2

<?php 
   $deque = new \Ds\Deque([1, 2, 3, 4, 5]); 
   echo("The elements in the deque: \n"); 
   var_dump($deque); 
  
   echo("\n Checking for an element in the deque: \n");
   var_dump($deque->contains("TPT")); 
?>