Ds\Sequence::contains

(PECL ds >= 1.0.0)

Ds\Sequence::contains — Determines if the sequence contains given values

说明

abstract public function Ds\Sequence::contains(mixed ...$values): bool

Determines if the sequence contains all values.

参数

values: Values to check.

返回值

false if any of the provided values are not in the sequence, true otherwise.

示例

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($sequence->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)