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<?php
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namespace App\Rules;
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use Illuminate\Contracts\Validation\Rule;
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class Idcard implements Rule
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{
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/**
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* Create a new rule instance.
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*
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* @return void
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*/
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public function __construct()
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{
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//
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}
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/**
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* Determine if the validation rule passes.
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*
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* @param string $attribute
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* @param mixed $value
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* @return bool
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*/
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public function passes($attribute, $value)
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{
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if (strlen($value) != 18) {
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return false;
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}
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# 转化为大写，如出现x
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$idcard = strtoupper($value);
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# 加权因子
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$wi = array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2);
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$ai = array('1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2');
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# 按顺序循环处理前17位
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$sigma = 0;
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# 提取前17位的其中一位，并将变量类型转为实数
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for ($i = 0; $i < 17; $i++) {
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$b = (int)$idcard[$i];
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# 提取相应的加权因子
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$w = $wi[$i];
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# 把从身份证号码中提取的一位数字和加权因子相乘，并累加
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$sigma += $b * $w;
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}
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# 计算序号
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$sidcard = $sigma % 11;
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# 按照序号从校验码串中提取相应的字符。
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$check_idcard = $ai[$sidcard];
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if ($idcard[17] == $check_idcard) {
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return true;
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} else {
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return false;
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}
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}
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/**
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* Get the validation error message.
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*
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* @return string
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*/
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public function message()
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{
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return '身份证号码格式错误';
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}
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}
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