71 lines
2.0 KiB
PHP
71 lines
2.0 KiB
PHP
<?php
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/****************************************************************
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* Author: libaojia
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* Date: 2017/8/25 下午3:34
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* Email: livsyitian@163.com
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* QQ: 995265288
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* User:
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****************************************************************/
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namespace app\common\services;
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class IDCardService
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{
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//检证身份证是否正确
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public static function isCard($card) {
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$card = self::to18Card($card);
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if (strlen($card) != 18) {
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return false;
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}
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$cardBase = substr($card, 0, 17);
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return (self::getVerifyNum($cardBase) == strtoupper(substr($card, 17, 1)));
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}
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//格式化15位身份证号码为18位
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public static function to18Card($card) {
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$card = trim($card);
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if (strlen($card) == 18) {
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return $card;
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}
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if (strlen($card) != 15) {
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return false;
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}
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// 如果身份证顺序码是996 997 998 999，这些是为百岁以上老人的特殊编码
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if (array_search(substr($card, 12, 3), array('996', '997', '998', '999')) !== false) {
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$card = substr($card, 0, 6) . '18' . substr($card, 6, 9);
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} else {
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$card = substr($card, 0, 6) . '19' . substr($card, 6, 9);
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}
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$card = $card . self::getVerifyNum($card);
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return $card;
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}
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// 计算身份证校验码，根据国家标准gb 11643-1999
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private static function getVerifyNum($cardBase) {
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if (strlen($cardBase) != 17) {
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return false;
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}
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// 加权因子
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$factor = array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2);
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// 校验码对应值
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$verify_number_list = array('1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2');
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$checksum = 0;
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for ($i = 0; $i < strlen($cardBase); $i++) {
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$checksum += substr($cardBase, $i, 1) * $factor[$i];
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}
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$mod = $checksum % 11;
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$verify_number = $verify_number_list[$mod];
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return $verify_number;
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}
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} |