(PECL ds >= 1.0.0)
Ds\Deque::contains — Determines if the deque contains given values
public Ds\Deque::contains ( mixed ...$values ) : bool
Determines if the deque contains all values.
values
Values to check.
false if any of the provided values are not in the deque, true otherwise.
Example #1 Ds\Deque::contains() example
<?php
$deque = new \Ds\Deque(['a', 'b', 'c', 1, 2, 3]);
var_dump($deque->contains('a')); // true
var_dump($deque->contains('a', 'b')); // true
var_dump($deque->contains('c', 'd')); // false
var_dump($deque->contains(...['c', 'b', 'a'])); // true
// Always strict
var_dump($deque->contains(1)); // true
var_dump($deque->contains('1')); // false
var_dump($sequece->contains(...[])); // true
?> The above example will output something similar to:
bool(true) bool(true) bool(false) bool(true) bool(true) bool(false) bool(true)
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https://www.php.net/manual/en/ds-deque.contains.php