(PECL ds >= 1.0.0)
Ds\Map::hasValue — Determines whether the map contains a given value
public Ds\Map::hasValue ( mixed $value ) : bool
Determines whether the map contains a given value.
value
The value to look for.
Returns true
if the value could found, false
otherwise.
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https://www.php.net/manual/en/ds-map.hasvalue.php