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<?php
namespace msztorc\LaravelEnv\Commands\Traits;
use InvalidArgumentException;
trait CommandValidator
{
private $invalidKeyException = 'Invalid environment key. Only use upper letters, digits, and underscores. A variable must start with the letter.';
/**
* Check if a given string is valid as an environment variable key.
*
* @param string $key
* @return bool
*/
protected function isValidKey(string $key): bool
if (!preg_match('/^[A-Z_]\w*$/', $key)) {
throw new InvalidArgumentException($this->invalidKeyException);
}
return true;
msztorc /
laravel-env
