/**
* @param mixed $data Data to be stored
* @param null|mixed $key Key under which to store the data, is generated if omitted
* @return string The key
* @throws \Exception
*/
public function write($data, $key = null)
{
if (!$key) {
$key = $this->key->generate();
}
$this->guardStringiness($key);
$this->data[(string) $key] = $data;
return $key;
}
/**
* @param string $data Data to be stored
* @param null|string $key Key under which to store the data, is generated if omitted
* @return string The key
* @throws \Exception If data or key are not strings
*/
public function write($data, $key = null)
{
$this->guardStringiness($data, 'Only strings can be stored in flat files.');
if (!$key) {
$key = $this->key->generate();
}
$this->guardStringiness($key);
$path = $this->path($key);
$dir = dirname($path);
if (!file_exists($dir)) {
mkdir($dir, 0777, true);
}
file_put_contents($path, (string) $data);
return $key;
}