(PECL ds >= 1.0.0)
Ds\Sequence::contains — Determines if the sequence contains given values
Determines if the sequence contains all values.
valuesValues to check.
false if any of the provided values are not in the
sequence, true otherwise.
示例 #1 Ds\Sequence::contains() example
<?php
$sequence = new \Ds\Vector(['a', 'b', 'c', 1, 2, 3]);
var_dump($sequence->contains('a')); // true
var_dump($sequence->contains('a', 'b')); // true
var_dump($sequence->contains('c', 'd')); // false
var_dump($sequence->contains(...['c', 'b', 'a'])); // true
// Always strict
var_dump($sequence->contains(1)); // true
var_dump($sequence->contains('1')); // false
var_dump($sequece->contains(...[])); // true
?>以上示例的输出类似于：
bool(true) bool(true) bool(false) bool(true) bool(true) bool(false) bool(true)