function MapInterface::containsKey

Returns `true` if this map contains a mapping for the specified key.

Parameters

K $key The key to check in the map.:

1 method overrides MapInterface::containsKey()

AbstractMap::containsKey in vendor/ramsey/collection/src/Map/AbstractMap.php

Returns `true` if this map contains a mapping for the specified key.

File

vendor/ramsey/collection/src/Map/MapInterface.php, line 35

Class

MapInterface

An object that maps keys to values.

Namespace

Ramsey\Collection\Map

Code

public function containsKey(int|string $key) : bool;