/** * 验证合法性 */ function checkIdCard($idcard){ $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"); $iSum = 0; $idCardLength = strlen($idcard); //长度验证 if(!preg_match(‘/^\d{17}(\d|x)$/i‘,$idcard) and !preg_match(‘/^\d{15}$/i‘,$idcard)){ return false; } //地区验证 if(!array_key_exists(intval(substr($idcard,0,2)),$City)){ return false; } // 15位验证生日,转换为18位 if ($idCardLength == 15){ $sBirthday = ‘19‘.substr($idcard,6,2).‘-‘.substr($idcard,8,2).‘-‘.substr($idcard,10,2); $d = new DateTime($sBirthday); $dd = $d->format(‘Y-m-d‘); if($sBirthday != $dd){ return false; } $idcard = substr($idcard,0,6)."19".substr($idcard,6,9);//15to18 $Bit18 = getVerifyBit($idcard);//算出第18位校验码 $idcard = $idcard.$Bit18; } // 判断是否大于2078年,小于1900年 $year = substr($idcard,6,4); if ($year<1900 || $year>2078 ){ return false; } //18位处理 $sBirthday = substr($idcard,6,4).‘-‘.substr($idcard,10,2).‘-‘.substr($idcard,12,2); $d = new DateTime($sBirthday); $dd = $d->format(‘Y-m-d‘); if($sBirthday != $dd){ return false; } //编码规范验证 $idcard_base = substr($idcard,0,17); if(strtoupper(substr($idcard,17,1)) != $this->getVerifyBit($idcard_base)){ return false; } return $idcard; } // 计算校验码,根据国家标准GB 11643-1999 function getVerifyBit($idcard_base){ if(strlen($idcard_base) != 17){ return false; } //加权因子 $factor = array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2); //校验码对应值 $verify_number_list = array(‘1‘, ‘0‘, ‘X‘, ‘9‘, ‘8‘, ‘7‘, ‘6‘, ‘5‘, ‘4‘,‘3‘, ‘2‘); $checksum = 0; for ($i = 0; $i < strlen($idcard_base); $i++){ $checksum += substr($idcard_base, $i, 1) * $factor[$i]; } $mod = $checksum % 11; $verify_number = $verify_number_list[$mod]; return $verify_number; }
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原文地址:http://suyanzhu.blog.51cto.com/8050189/1939076