用正则表达式函数验证身份证号码合法性

身份证号码验证函数：

CREATE OR REPLACE FUNCTION fn_checkidcard (p_idcard IN VARCHAR2)

RETURN INT

v_regstr VARCHAR2 (2000);

v_sum NUMBER;

v_mod NUMBER;

v_checkcode CHAR (11) := '10X98765432';

v_checkbit CHAR (1);

v_areacode VARCHAR2 (2000)

:= '11,12,13,14,15,21,22,23,31,32,33,34,35,36,37,41,42,43,44,45,46,50,51,52,53,54,61,62,63,64,65,71,81,82,91,';

BEGIN

CASE LENGTHB (p_idcard)

WHEN 15

THEN -- 15位

IF INSTRB (v_areacode, SUBSTR (p_idcard, 1, 2) ',') = 0

THEN

RETURN 0;

END IF;

IF MOD (TO_NUMBER (SUBSTRB (p_idcard, 6, 2)) + 1900, 400) = 0

OR ( MOD (TO_NUMBER (SUBSTRB (p_idcard, 6, 2)) + 1900, 100) <>

AND MOD (TO_NUMBER (SUBSTRB (p_idcard, 6, 2)) + 1900, 4) = 0

)

THEN -- 闰年

v_regstr :=

'^[1-9][0-9]{5}[0-9]{2}((01030507081012)(0[1-9][1-2][0-9]3[0-1])(04060911)(0[1-9][1-2][0-9]30)02(0[1-9][1-2][0-9]))[0-9]{3}$';

ELSE

v_regstr :=

'^[1-9][0-9]{5}[0-9]{2}((01030507081012)(0[1-9][1-2][0-9]3[0-1])(04060911)(0[1-9][1-2][0-9]30)02(0[1-9]1[0-9]2[0-8]))[0-9]{3}$';

END IF;

IF REGEXP_LIKE (p_idcard, v_regstr)

THEN

RETURN 1;

ELSE

RETURN 0;

END IF;

WHEN 18

THEN -- 18位

IF INSTRB (v_areacode, SUBSTRB (p_idcard, 1, 2) ',') = 0

THEN

RETURN 0;

END IF;

IF MOD (TO_NUMBER (SUBSTRB (p_idcard, 6, 4)), 400) = 0

OR ( MOD (TO_NUMBER (SUBSTRB (p_idcard, 6, 4)), 100) <> 0

AND MOD (TO_NUMBER (SUBSTRB (p_idcard, 6, 4)), 4) = 0

)

THEN -- 闰年

v_regstr :=

'^[1-9][0-9]{5}19[0-9]{2}((01030507081012)(0[1-9][1-2][0-9]3[0-1])(04060911)(0[1-9][1-2][0-9]30)02(0[1-9][1-2][0-9]))[0-9]{3}[0-9Xx]$';

ELSE

v_regstr :=

'^[1-9][0-9]{5}19[0-9]{2}((01030507081012)(0[1-9][1-2][0-9]3[0-1])(04060911)(0[1-9][1-2][0-9]30)02(0[1-9]1[0-9]2[0-8]))[0-9]{3}[0-9Xx]$';

END IF;

IF REGEXP_LIKE (p_idcard, v_regstr)

THEN

v_sum :=

( TO_NUMBER (SUBSTRB (p_idcard, 1, 1))

+ TO_NUMBER (SUBSTRB (p_idcard, 11, 1))

)

* 7

+ ( TO_NUMBER (SUBSTRB (p_idcard, 2, 1))

+ TO_NUMBER (SUBSTRB (p_idcard, 12, 1))

)

* 9

+ ( TO_NUMBER (SUBSTRB (p_idcard, 3, 1))

+ TO_NUMBER (SUBSTRB (p_idcard, 13, 1))

)

* 10

+ ( TO_NUMBER (SUBSTRB (p_idcard, 4, 1))

+ TO_NUMBER (SUBSTRB (p_idcard, 14, 1))

)

* 5

+ ( TO_NUMBER (SUBSTRB (p_idcard, 5, 1))

+ TO_NUMBER (SUBSTRB (p_idcard, 15, 1))

)

* 8

+ ( TO_NUMBER (SUBSTRB (p_idcard, 6, 1))

+ TO_NUMBER (SUBSTRB (p_idcard, 16, 1))

)

* 4

+ ( TO_NUMBER (SUBSTRB (p_idcard, 7, 1))

+ TO_NUMBER (SUBSTRB (p_idcard, 17, 1))

)

* 2

+ TO_NUMBER (SUBSTRB (p_idcard, 8, 1)) * 1

+ TO_NUMBER (SUBSTRB (p_idcard, 9, 1)) * 6

+ TO_NUMBER (SUBSTRB (p_idcard, 10, 1)) * 3;

v_mod := MOD (v_sum, 11);

v_checkbit := SUBSTRB (v_checkcode, v_mod + 1, 1);

IF v_checkbit = SUBSTRB (p_idcard, 18, 1)

THEN

RETURN 1;

ELSE

RETURN 0;

END IF;

ELSE

RETURN 0;

END IF;

ELSE

RETURN 0; -- 身份证号码位数不对

END CASE;

EXCEPTION

WHEN OTHERS

THEN

RETURN 0;

END fn_checkidcard;