<?php namespace Rakit\Validation\Rules; use Rakit\Validation\Rule; class Digits extends Rule { /** @var string */ protected $message = "The :attribute must be numeric and must have an exact length of :length"; /** @var array */ protected $fillableParams = ['length']; /** * Check the $value is valid * * @param mixed $value * @return bool */ public function check($value): bool { $this->requireParameters($this->fillableParams); $length = (int) $this->parameter('length'); return ! preg_match('/[^0-9]/', $value) && strlen((string) $value) == $length; } }