php大陆身份证号处理类

 
<?php
use DateTime;
/**
 * 身份证号处理类
 * @author WeakSun <52132522@qq.com>
 */
class Idcard {
  
    static private $factor = array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2),
            $verify = array(1, 0, 'X', 9, 8, 7, 6, 5, 4, 3, 2),
            $info = array('status' => false, 'info' => '', 'data' => array());
    /**
     * 验证身份证号码有效性
     * @param string $idnum 身份证号码
     * @return array
     */
    public function index($idnum = null) {
        switch (strlen($idnum)) {
            case 18:
                break;
            case 15:
                $idnum = $this->upgrade($idnum);
                break;
            default :
                return $this->info(false, 'error', $idnum);
        }
        $info = $this->getInfo($idnum);
        $info['status'] = $this->getCode($idnum) == strtoupper(substr($idnum, -1));
        return $info;
    }
  
    /**
     * 获取身份证信息
     * @param string $idnum 身份证号码
     * @return array
     */
    public function getInfo($idnum) {
        $data = array(
            'id' => $idnum,
            'city' => substr($idnum, 0, 6),
            'birthday' => substr($idnum, 6, 4) . '-' . substr($idnum, 10, 2) . '-' . substr($idnum, 10, 2),
            'sex' => substr($idnum, -2, 1) % 2 ? '男' : '女'
        );
        $datetime = new DateTime($data['birthday']);
        $data['age'] = $datetime->diff(date_create())->format('%y');
        return $this->info(true, null, $data);
    }
  
    /**
     * 15位号码升级18位
     * @param string $idnum
     * @return array
     */
    public function upgrade($idnum) {
        if (strlen($idnum) != 15) {
            $this->info(true, null, $idnum);
        } else {
            $idnum = array(substr($idnum, 0, 6), 19, substr($idnum, 6));
            substr($idnum, -3) > 995 && $idnum[1] --;
            $idnum = implode('', $idnum);
        }
        return $this->info(true, null, $idnum . $this->getCode($idnum));
    }
  
    /**
     * 获取确认码
     * @param string $idnum 身份证号码
     * @return string 成功返回确认码，失败返回false
     */
    protected function getCode($idnum) {
        $code = 0;
        foreach (str_split($idnum) as $k => $v) {
            $code += $v * static::$factor[$k];
        }
        $index = $code % 11;
        return static::$verify[$index];
    }
  
    protected function info($status, $msg = null, $data = null) {
        $info = static::$info;
        empty($msg) || $info['info'] = $msg;
        empty($data) || $info['data'] = $data;
        if(is_array($status)){
            $info = array_merge($info, $status);
        }elseif(is_bool($status)){
            $info['status'] = $status;
        }
        return $info;
    }
  
}