份证号验证(兼容15，18位) ，注册验证的时候可以用上。
01
//比较菜鸟 第一次分享代码
02
//身份证号验证
03
protected function checkIdCard(){
04
if(empty($_POST['idcard'])){
05
return false;
06
}
07
$idcard = $_POST['idcard'];
08
$City = array(11=>"北京",12=>"天津",13=>"河北",14=>"山西",15=>"内蒙古",21=>"辽宁",22=>"吉林",23=>"黑龙江",31=>"上海",32=>"江苏",33=>"浙江",34=>"安徽",35=>"福建",36=>"江西",37=>"山东",41=>"河南",42=>"湖北",43=>"湖南",44=>"广东",45=>"广西",46=>"海南",50=>"重庆",51=>"四川",52=>"贵州",53=>"云南",54=>"西藏",61=>"陕西",62=>"甘肃",63=>"青海",64=>"宁夏",65=>"新疆",71=>"台湾",81=>"香港",82=>"澳门",91=>"国外");
09
$iSum = 0;
10
$idCardLength = <code class="functions">strlen($idcard);
11
//长度验证
12
if(!preg_match('/^\d{17}(\d|x)$/i',$idcard) and!preg_match('/^\d{15}$/i',$idcard))
13
{
14
return false;
15
}
16
//地区验证
17
if(!array_key_exists(intval(substr($idcard,0,2)),$City))
18
{
19
return false;
20
}
21
// 15位身份证验证生日，转换为18位
22
if ($idCardLength == 15)
23
{
24
$sBirthday = '19'.substr($idcard,6,2).'-'.substr($idcard,8,2).'-'.substr($idcard,10,2);
25
$d = new DateTime($sBirthday);
26
$dd = $d->format('Y-m-d');
27
if($sBirthday != $dd)
28
{
29
return false;
30
}
31
$idcard = substr($idcard,0,6)."19".substr($idcard,6,9);//15to18
32
$Bit18 = getVerifyBit($idcard);//算出第18位校验码
33
$idcard = $idcard.$Bit18;
34
}
35
// 判断是否大于2078年，小于1900年
36
<code class="variable">$year = substr($idcard,6,4);
37
if (<code class="variable">$year<code class="variable">$year>2078 )
38
{
39
return false;
40
}
41
42
//18位身份证处理
43
$sBirthday = substr($idcard,6,4).'-'.substr($idcard,10,2).'-'.substr($idcard,12,2);
44
$d = new DateTime($sBirthday);
45
$dd = $d->format('Y-m-d');
46
if($sBirthday != $dd)
47
{
48
return false;
49
}
50
//身份证编码规范验证
51
$idcard_base = substr($idcard,0,17);
52
if(strtoupper(substr($idcard,17,1)) != getVerifyBit($idcard_base))
53
{
54
return false;
55
}
56
return $_POST['idcard'];
57
}
58
59
// 计算身份证校验码，根据国家标准GB 11643-1999
60
function getVerifyBit($idcard_base)
61
{
62
if(<code class="functions">strlen($idcard_base) != 17)
63
{
64
return false;
65
}
66
//加权因子
67
$factor = array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2);
68
//校验码对应值
69
$verify_number_list = array('1', '0', 'X', '9', '8', '7', '6', '5', '4','3', '2');
70
$checksum = 0;
71
for ($i = 0; $i <code class="functions">strlen($idcard_base); $i++)
72
{
73
$checksum += substr($idcard_base, $i, 1) * $factor[$i];
74
}
75
$mod = $checksum % 11;
76
$verify_number = $verify_number_list[$mod];
77
return $verify_number;
78
}
