(PECL ds >= 1.0.0)
Ds\Deque::contains — Determines if the deque contains given values.
Determines if the deque contains all values.
valuesValues 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
?>
以上例程的输出类似于：
bool(true) bool(true) bool(false) bool(true) bool(true) bool(false) bool(true)