身份证验证

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//php验证身份证合法性// 计算身份证校验码，根据国家标准GB 11643-1999class Util{static function idcard_verify_number($idcard_base){if (strlen($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];}$mod = strtoupper($checksum % 11);$verify_number = $verify_number_list[$mod];return $verify_number;}}// 将15位身份证升级到18位function idcard_15to18($idcard){if (strlen($idcard) != 15){return false;}else{// 如果身份证顺序码是996 997 998 999，这些是为百岁以上老人的特殊编码if (array_search(substr($idcard, 12, 3), array('996', '997', '998', '999')) !== false){$idcard = substr($idcard, 0, 6) . '18'. substr($idcard, 6, 9);}else{$idcard = substr($idcard, 0, 6) . '19'. substr($idcard, 6, 9);}}$idcard = $idcard . Util::idcard_verify_number($idcard);return $idcard;}//18位身份证校验码有效性检查function idcard_checksum18($idcard){if (strlen($idcard) != 18){ return false; }$aCity = 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");//非法地区if (!array_key_exists(substr($idcard,0,2),$aCity)) {return false;}//验证生日if (!checkdate(substr($idcard,10,2),substr($idcard,12,2),substr($idcard,6,4))) {return false;}$idcard_base = substr($idcard, 0, 17);if (Util::idcard_verify_number($idcard_base) != strtoupper(substr($idcard, 17, 1))){return false;}else{return true;}}
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