Ds\Map::hasKey
PHP function
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(PECL ds >= 1.0.0)
Determines whether the map contains a given key
Description
Ds\Map::hasKey(mixed $key): bool
Determines whether the map contains a given key.
Parameters
keyThe key to look for.
Return Values
Returns true if the key could be found, false otherwise.
Examples
Ds\Map::hasKey() example
php
<?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:
output
bool(true)
bool(false)