Php professional ID card verification, no need for regular verification ID card

Source: Internet
Author: User
Tags strlen
The code is as follows: Copy code

<? Php
$ IDCard = new IDCard ();
Var_dump ($ IDCard: isCard ($ _ GET ['card ']);
 
/**
* Id card processing
*/
Class IDCard {
 
// Check whether the ID card is correct
Public static function isCard ($ card ){
$ Card = self: to18Card ($ card );
If (strlen ($ card )! = 18 ){
Return false;
        }
 
$ CardBase = substr ($ card, 0, 17 );
 
Return (self: getVerifyNum ($ cardBase) = strtoupper (substr ($ card, 17, 1 )));
    }
 
 
// Format the 15-digit ID card number to 18
Public static function to18Card ($ card ){
$ Card = trim ($ card );
 
If (strlen ($ card) = 18 ){
Return $ card;
        }
 
If (strlen ($ card )! = 15 ){
Return false;
        }
 
// If the ID card sequence code is 996 997 998 999, these are special codes for elderly people over years old
If (array_search (substr ($ card, 12, 3), array ('20160301', '20160301', '20160301 '))! = False ){
$ Card = substr ($ card, 0, 6). '18'. substr ($ card, 6, 9 );
} Else {
$ Card = substr ($ card, 0, 6). '19'. substr ($ card, 6, 9 );
        }
$ Card = $ card. self: getVerifyNum ($ card );
Return $ card;
    }
 
// Calculate the ID card verification code based on the national standard gb 11643-1999
Private static function getVerifyNum ($ cardBase ){
If (strlen ($ cardBase )! = 17 ){
Return false;
        }
// Weighting factor
$ Factor = array (7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2 );
 
// Check code value
$ Verify_number_list = array ('1', '0', 'X', '9', '8', '7', '6', '5 ', '4', '3', '2 ');
 
$ Checksum = 0;
For ($ I = 0; $ I <strlen ($ cardBase); $ I ++ ){
$ Checksum + = substr ($ cardBase, $ I, 1) * $ factor [$ I];
        }
 
$ Mod = $ checksum % 11;
$ Verify_number = $ verify_number_list [$ mod];
 
Return $ verify_number;
    }
}
 
?>
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