Ds\Map::hasKey
Ds\Map::hasKey
(PECL ds >= 1.0.0)
Ds\Map::hasKey — Determines whether the map contains a given key.
Description
public bool Ds\Map::hasKey ( mixed $key )
Determines whether the map contains a given key.
Parameters
-
key -
The key to look for.
Return Values
Returns TRUE if the key could found, FALSE otherwise.
Examples
Example #1 Ds\Map::hasKey() example
<?php
$map = new \Ds\Map(["a" => 1, "b" => 2, "c" => 3]);
var_dump($map->hasKey("a")); // true
var_dump($map->hasKey("e")); // false
?> The above example will output something similar to:
bool(true) bool(false)
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https://secure.php.net/manual/en/ds-map.haskey.php
