检测身份证号码,最准确的肯定是通过国家的身份数据中心检测,想想也不知道,这个东西不是这么好弄的,所以下面介绍一个办法,通过前17位来检测,直接上例子了:
- <?php
- $idCard = '12345678901234567';
- $wi = array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2);
- $ai = array('1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2');
- $sigma = null;
- for ($i = 0; $i < 17; $i++) {
- $sigma += ((int) $idCard{$i}) * $wi[$i];
- }
- echo "身份证号码:".$idCard.$ai[($sigma % 11)];
- ?>
-
- function validation_filter_id_card($id_card)
- {
- if(strlen($id_card) == 18)
- {
- return idcard_checksum18($id_card);
- }
- elseif((strlen($id_card) == 15))
- {
- $id_card = idcard_15to18($id_card);
- return idcard_checksum18($id_card);
- }
- else
- {
- return false;
- }
- }
-
- function idcard_verify_number($idcard_base)
- {
- if(strlen($idcard_base) != 17)
- {
- return false;
- }
-
- $factor = array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2);
-
- $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 $verify_number;
- }
-
- function idcard_15to18($idcard){
- if (strlen($idcard) != 15){
- return false;
- }else{
-
- if (array_search(substr($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 = $idcard . idcard_verify_number($idcard);
- return $idcard;
- }
-
- function idcard_checksum18($idcard){
- if (strlen($idcard) != 18){ return false; }
- $idcard_base = substr($idcard, 0, 17);
- if (idcard_verify_number($idcard_base) != strtoupper(substr($idcard, 17, 1))){
- return false;
- }else{
- return true;
- }
- }
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