src/View/Helper/Params.php
public function fromFiles($name = null, $default = null)
    {
        if ($name === null) {
            return $this->event->getRequest()->getFiles($name, $default)->toArray();
        }
    
        return $this->event->getRequest()->getFiles($name, $default);
    }
public function fromFiles($name = null, $default = null)
    {
        if ($name === null) {
            return $this->event->getRequest()->getFiles($name, $default)->toArray();
        }
    
        return $this->event->getRequest()->getFiles($name, $default);
    }
Return all files or a single file.

@param  string $name File name to retrieve, or null to get all.
@param  mixed $default Default value to use when the file is missing.
@return array|\ArrayAccess|null