(PECL openal >= 0.1.0)
openal_device_open — Initialize the OpenAL audio layer
openal_device_open(string $device_desc = ?): resource
device_desc Open an audio device optionally specified by device_desc. If device_desc is not specified the first available audio device will be used.
Returns an Open AL(Device) resource on success or false on failure.
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https://www.php.net/manual/en/function.openal-device-open.php