Question

以root身份：

/* Main Function */
int main(void) {
    /* Declare and initialize Variables */
    double temp, conduc, tempsqrd, temptconduc, sumtemp, sumconduc;
    double sumtempsqrd, sumtemptconduc, slope, yint;
    int i, ndata;
    FILE *therm, *out;

    /* Open Files */
    therm = fopen(inputfile, "r");
    out = fopen(outputfile, "w");

    /* print output headings */
    printf("******************************************");
    printf("\n   TEMPERATURE vs THERMAL CONDUCTIVITY"
           "\n           by Tyrus Sonneborn"
           "\n\nTemp    Conduct    Temp Sqrd    Temp*Conduct");
    fprintf(out, "******************************************");
    fprintf(out, "\n    TEMPERATURE vs THERMAL CONDUCTIVITY"
                 "\n           by Tyrus Sonneborn"
                 "\n\nTemp    Conduct    Temp Sqrd    Temp*Conduct");   

    /* Verify input file and read control number */
    if (therm == NULL) {
        printf("\n\n\n\n   ERROR OPENING INPUT FILE.");
        printf("\n\n   PROGRAM TERMINATED.\n\n\n");
        return 0;
    } else {
        /* Read control number */
        fscanf(therm, "%i", &ndata);

        /* Compute the conductivity data and sums. */
        for (i = 1; i <= ndata; i++) {
            fscanf(therm, "%lf %lf", &temp, &conduc);
            sumconduc = conduc + sumconduc;
            tempsqrd = pow(temp, 2);
            temptconduc = temp * conduc;
            sumtemp = temp + sumtemp;
            sumtempsqrd = sumtempsqrd;
            sumtemptconduc = sumtemptconduc;
            printf("\n %3f     %4.0f       %6.0f       %6.0f",
                   temp, conduc, tempsqrd, temptconduc);
            fprintf(out, "\n %3f     %5.1f       %6.0f      %6.0f",
                    temp, conduc, tempsqrd, temptconduc);
        }
    }
    /* computing the slope and y intercept */
    slope = (sumtemp * sumconduc - ndata * sumtemptconduc) / (pow(sumtemp, 2) - ndata * (pow(sumtemp, 2)));
    yint = (sumconduc - slope * sumtemp) / ndata;
    printf("\n\n%10f, %10f, %10f, %10f",
           sumtemp, sumconduc, sumtempsqrd, sumtemptconduc);
    fprintf(out, "\n\n%10f, %10f, %10f, %10f",
            sumtemp, sumconduc, sumtempsqrd, sumtemptconduc);

在PHP中：

SHOW DATABASES;

DROP DATABASE IF EXISTS  conman; 

Create Database conman;

USE conman;

CREATE TABLE contact_info(

firstname varchar(25),
middleinitial char(1),
lastname varchar(25),
suffix_description varchar(5),
title_description varchar(5),
jobtitle varchar(40),
department varchar(30),
email varchar(35),
url varchar(50),
IMaddress varchar(25),
phone_number varchar(25),
phonetype_description varchar(10),
birthday date,
notes varchar(255),
companyname varchar(30),
addressLine1 varchar(40),
addressLine2 varchar(45),
city varchar(25),
state_province varchar(20),
zip_postalcode varchar(10),
country_region varchar(15),
companyURL varchar(45),
companyPhone varchar(12)
);

INSERT INTO contact_info
(
firstName,
middleInitial,
lastName,
suffixDescription,
titleDescription,
jobTitle,
department,
email,
url,
IMaddress,
phoneNumber,
phoneDescription,
birthday,
notes,
companyName,
addressLine1,
addressLine2,
city,
state_province,
zip_postalcode,
country_region,
companyURL,
companyPhone
)
VALUES
(
'Jacob',
'P',
'Jacobson',
'Jr',
'Mr',
'Director',
'Finance',
'rjameson@concor.com',
'www.concor.com/~rjames',
'jpjacobson',
'323-546-6834',
'work',
'1969-07-13',
'All meetings must be scheduled through Charlene Renolds',
'Concor International, Inc.',
'143 South Main Street',
'',
'Los Angeles',
'CA',
'90012-3712',
'USA',
'www.concor.com',
'323-546-6834'
)

错误讯息：

GRANT ALL PRIVILEGES ON * . * To 'JKR'@'%' IDENTIFIED BY "";
FLUSH PRIVILEGES;

由于某种原因只能以root身份运行... 我怎么得到$con = new PDO("mysql:host=127.0.0.1;dbname=jkr;charset=utf8", "JKR", "");？

Answer 1

您的系统上很可能有匿名用户''@'localhost'。匿名用户是忽略名称的用户。

如果您使用来自JKR的{{1}}连接到MySQL，它将与匿名用户匹配。

您可以使用localhost

进行检查

有关MySQL匹配用户和权限的方式的详细讨论，请参阅https://dev.mysql.com/doc/refman/5.7/en/connection-access.html。

Answer 2

在我的情况下，mysql帐户是REQUIRE SSL;必须提供ssl_ca文件（至少）。其他ssl参数位于：http://dev.mysql.com/doc/refman/5.7/en/secure-connection-options.html

使用正确的凭据拒绝访问，发生了什么？

2 个答案: