1、正則表達式寫法：
CREATE OR REPLACE FUNCTION Func_checkidcard (p_idcard IN VARCHAR2) RETURN INTIS 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, 7, 2)) + 1900, 400) = 0 OR ( MOD (TO_NUMBER (SUBSTRB (p_idcard, 7, 2)) + 1900, 100) <> 0 AND MOD (TO_NUMBER (SUBSTRB (p_idcard, 7, 2)) + 1900, 4) = 0 ) THEN -- 閏年 v_regstr := '^[1-9][0-9]{5}[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|[1-2][0-9]))[0-9]{3}$'; ELSE v_regstr := '^[1-9][0-9]{5}[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|1[0-9]|2[0-8]))[0-9]{3}$'; 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, 7, 4)), 400) = 0 OR ( MOD (TO_NUMBER (SUBSTRB (p_idcard, 7, 4)), 100) <> 0 AND MOD (TO_NUMBER (SUBSTRB (p_idcard, 7, 4)), 4) = 0 ) THEN -- 閏年 v_regstr := '^[1-9][0-9]{5}(19|20)[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|[1-2][0-9]))[0-9]{3}[0-9Xx]$'; ELSE v_regstr := '^[1-9][0-9]{5}(19|20)[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|1[0-9]|2[0-8]))[0-9]{3}[0-9Xx]$'; 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 = upper(substrb(p_idcard,18,1)) THEN RETURN 1; ELSE RETURN 0; END IF; ELSE RETURN 0; END IF; ELSE RETURN 0; -- 身份證號碼位數不對 END CASE;EXCEPTION WHEN OTHERS THEN RETURN 0;END fn_checkidcard;/Show Err;2、非正則表達式寫法
Create Or Replace Function Func_checkIdcard (p_idcard in varchar2) Return NumberIs v_sum Number; v_mod Number; v_length Number; v_date Varchar2(10); v_isDate Boolean; v_isNumber Boolean; v_isNumber_17 Boolean; v_checkbit CHAR (1); v_checkcode CHAR (11) := '10X98765432'; 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,'; --[isNumber]-- Function isNumber (p_string in varchar2) Return Boolean Is i number; k number; flag boolean; v_length number; Begin /* 算法: 通過ASCII碼判斷是否數字，介于[48, 57]之間。 select ascii('0'),ascii('1'),ascii('2'),ascii('3'),ascii('4'),ascii('5'),ascii('6'),ascii('7'),ascii('8'),ascii('9') from dual; */ flag := True; select length(p_string) into v_length from dual; for i in 1..v_length loop k := ascii(substr(p_string,i,1)); if k < 48 or k > 57 then flag := False; Exit; end if; end loop; Return flag; End isNumber; --[isDate]-- Function isDate (p_date in varchar2) Return Boolean Is v_flag boolean; v_year number; v_month number; v_day number; v_isLeapYear boolean; Begin --[初始化]-- v_flag := True; --[獲取信息]-- v_year := to_number(substr(p_date,1,4)); v_month := to_number(substr(p_date,5,2)); v_day := to_number(substr(p_date,7,2)); --[判斷是否為閏年]-- if (mod(v_year,400) = 0) Or (mod(v_year,100) <> 0 And mod(v_year,4) = 0) then v_isLeapYear := True; else v_isLeapYear := False; end if; --[判斷月份]-- if v_month < 1 Or v_month > 12 then v_flag := False; Return v_flag; end if; --[判斷日期]-- if v_month in (1,3,5,7,8,10,12) and (v_day < 1 or v_day > 31) then v_flag := False; end if; if v_month in (4,6,9,11) and (v_day < 1 or v_day > 30) then v_flag := False; end if; if v_month in (2) then if (v_isLeapYear) then --[閏年]-- if (v_day < 1 or v_day > 29) then v_flag := False; end if; else --[非閏年]-- if (v_day < 1 or v_day > 28) then v_flag := False; end if; end if; end if; --[返回結果]-- Return v_flag; End isDate;Begin /* 返回值說明: -1 身份證號碼位數不對 -2 身份證號碼出生日期超出范圍 -3 身份證號碼含有非法字符 -4 身份證號碼校驗碼錯誤 -5 身份證號碼地區碼非法 身份證號碼通過校驗 */ --[長度校驗]-- if p_idcard is null then return -1; end if ; select lengthb(p_idcard) into v_length from dual; if v_length not in (15,18) then return -1; end if; --[區位碼校驗]-- if instrb(v_areacode, substr(p_idcard, 1, 2)||',') = 0 then return -5; end if; --[格式化校驗]-- if v_length = 15 then v_isNumber := isNumber (p_idcard); if not (v_isNumber) then return -3; end if; elsif v_length = 18 then v_isNumber := isNumber (p_idcard); v_isNumber_17 := isNumber (substr(p_idcard,1,17)); if not ((v_isNumber) or (v_isNumber_17 and upper(substr(p_idcard,18,1)) = 'X')) then return -3; end if; end if; --[出生日期校驗]-- if v_length = 15 then select '19'||substr(p_idcard,7,6) into v_date from dual; elsif v_length = 18 then select substr(p_idcard,7,8) into v_date from dual; end if; v_isDate := isDate (v_date); if not (v_isDate) then return -2; end if; --[校驗碼校驗]-- if v_length = 18 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 = upper(substrb(p_idcard,18,1)) then return 1; else return -4; end if; else return 1; end if;End Func_checkIdcard;/Show Err;總結
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