private function randomStrings($amount)
{
$letters = 'qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM1234567890-!@#$%^&*()_';
$randomStrings = [];
for ($count = 0; $count < $amount; $count++) {
$randomStrings[] = substr(str_shuffle($letters), 0, rand(5, 10));
}
return $randomStrings;
}