ORACLE 移动号码验证

CREATE OR REPLACE FUNCTION checkMsisdn (msisdn IN VARCHAR2)
   RETURN INT
IS
   v_regstr Varchar2(2000):='^(150|151|152|158|159|13[4-9]{1})[0-9]{8}$';
Begin
      /*
          wzh 20091124 验证 手机号码是否是移动号码
      */
         IF REGEXP_LIKE (msisdn, v_regstr)
         THEN
            RETURN 1;
         Else
            RETURN 0;
         END IF;
EXCEPTION
   WHEN OTHERS
   Then
      RETURN 0;
END checkMsisdn;