Ds\Set::contains
(PECL ds >= 1.0.0)
Ds\Set::contains — Determines if the set contains all values
Description
public Ds\Set::contains ( mixed ...$values ) : bool
Determines if the set contains all values.
Note:
Values of type object are supported. If an object implements Ds\Hashable, equality will be determined by the object's
equalsfunction. If an object does not implement Ds\Hashable, objects must be references to the same instance to be considered equal.
All comparisons are strict (type and value).
Parameters
-
values -
Values to check.
Return Values
false if any of the provided values are not in the set, true otherwise.
Examples
Example #1 Ds\Set::contains() example
<?php
$set = new \Ds\Set([1, 2, 3]);
var_dump($set->contains(1)); // true
var_dump($set->contains(1, 2)); // true
var_dump($set->contains(...[1, 2])); // true
var_dump($set->contains("1")); // false
var_dump($set->contains(...[1, 2, 3, 4])); // false
var_dump($set->contains(...[])); // true
?> The above example will output something similar to:
bool(true) bool(true) bool(true) bool(false) bool(false) bool(true)
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https://www.php.net/manual/en/ds-set.contains.php