(PECL ds >= 1.0.0)
Ds\Map::hasKey — Determines whether the map contains a given key
Determines whether the map contains a given key.
key
The key to look for.
Example #1 Ds\Map::hasKey() example
<?php$map = new \Ds\Map(["a" => 1, "b" => 2, "c" => 3]);var_dump($map->hasKey("a")); // truevar_dump($map->hasKey("e")); // false?>
The above example will output something similar to:
bool(true) bool(false)