身份证号验证(兼容15，18位)
//比较菜鸟 第一次分享代码
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//身份证号验证 |
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protected function checkIdCard(){ |
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if(empty($_POST['idcard'])){ |
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return false; |
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} |
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$idcard = $_POST['idcard']; |
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$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"); |
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$iSum = 0; |
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$idCardLength = strlen($idcard); |
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//长度验证 |
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if(!preg_match('/^\d{17}(\d|x)$/i',$idcard) and!preg_match('/^\d{15}$/i',$idcard)) |
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{ |
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return false; |
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} |
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//地区验证 |
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if(!array_key_exists(intval(substr($idcard,0,2)),$City)) |
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{ |
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return false; |
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} |
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// 15位身份证验证生日，转换为18位 |
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if ($idCardLength == 15) |
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{ |
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$sBirthday = '19'.substr($idcard,6,2).'-'.substr($idcard,8,2).'-'.substr($idcard,10,2); |
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$d = new DateTime($sBirthday); |
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$dd = $d->format('Y-m-d'); |
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if($sBirthday != $dd) |
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{ |
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return false; |
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} |
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$idcard = substr($idcard,0,6)."19".substr($idcard,6,9);//15to18 |
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$Bit18 = getVerifyBit($idcard);//算出第18位校验码 |
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$idcard = $idcard.$Bit18; |
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} |
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// 判断是否大于2078年，小于1900年 |
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$year = substr($idcard,6,4); |
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if ($year<1900 || $year>2078 ) |
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{ |
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return false; |
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} |
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//18位身份证处理 |
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$sBirthday = substr($idcard,6,4).'-'.substr($idcard,10,2).'-'.substr($idcard,12,2); |
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$d = new DateTime($sBirthday); |
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$dd = $d->format('Y-m-d'); |
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if($sBirthday != $dd) |
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{ |
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return false; |
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} |
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//身份证编码规范验证 |
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$idcard_base = substr($idcard,0,17); |
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if(strtoupper(substr($idcard,17,1)) != getVerifyBit($idcard_base)) |
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{ |
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return false; |
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} |
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return $_POST['idcard']; |
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} |
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// 计算身份证校验码，根据国家标准GB 11643-1999 |
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function getVerifyBit($idcard_base) |
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{ |
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if(strlen($idcard_base) != 17) |
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{ |
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return false; |
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} |
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//加权因子 |
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$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; $i < strlen($idcard_base); $i++) |
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{ |
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$checksum += substr($idcard_base, $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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} |
