NN2022100801/app/Rules/BankNum.php

<?php

namespace App\Rules;

use Illuminate\Contracts\Validation\Rule;

class BankNum implements Rule
{
    /**
     * Create a new rule instance.
     *
     * @return void
     */
    public function __construct()
    {
        //
    }

    /**
     * Determine if the validation rule passes.
     *
     * @param  string  $attribute
     * @param  mixed  $value
     * @return bool
     */
    public function passes($attribute, $value)
    {
        //$rules = "/^([1-9]{1})(\d{14}|\d{18}|\d{16}|\d{19}|\d{17})$/";
        $rules="/^([1-9]{1})(\d{16}|\d{19})$/";
        return preg_match($rules, $value);
    }

    /**
     * Get the validation error message.
     *
     * @return string
     */
    public function message()
    {
        return '请输入正确的银行卡号';
    }
}