Supported Versions: PHP 4, PHP 5, PHP 7, PHP 8
Return all the keys or a subset of the keys of an array
<?php array_keys(array $array): array
<?php     public function styles(): array

    {

        return array_keys(Ignition::styles());

    }



    public function scripts(): array
<?php     public function scripts(): array

    {

        return array_keys(Ignition::scripts());

    }



    public function tabs(): string
<?php     {

        $validLogLevels = array_map(function (string $level) {

            return strtolower($level);

        }, array_keys(Logger::getLevels()));



        $validLogLevelsString = implode(',', $validLogLevels);
<?php     {

        Route::getRoutes()->refreshNameLookups();



        return StringComparator::findClosestMatch(array_keys(Route::getRoutes()->getRoutesByName()), $missingRoute);

    }

}
<?php             ->map(function ($version) {

                return collect($version['autoload'] ?? [])

                    ->map(function ($autoload) {

                        return array_keys($autoload);

                    })

                    ->flatten();

            })