Question

致命错误：未捕获错误：调用未定义的函数 C：\ xampp \ htdocs \ oes3 \ exam \ includes \ config.php中的mysql_connect（）13

"     <?php

    //START THE SESSION 
    session_start();

    //GLOBAL VARIABLES 
    define('DB_HOST','localhost');
    define('DB_USER','root');
    define('DB_PASS','');
    define('DB_NAME','exam');

    //FUNCTION TO CONNECT  DATABASE
    if(!mysql_connect(DB_HOST,DB_USER,DB_PASS))
        die('Could not connect : '.mysql_error());

    //FUNCTION TO SELECT THE DATABASE
    if(!mysql_select_db(DB_NAME))
        die('Could not select database : '.mysql_error());
?>"

Answer 1

尝试使用

$con = mysqli_connect("localhost","root","","test");

Answer 2

尝试mysqli_connect而不是mysql_connect。并使用mysqli更新其他方法。请尝试以下代码

$con=mysqli_connect(DB_HOST,DB_USER,DB_PASS);
if(!$con)
        die('Could not connect : '.mysqli_connect_error());  

//FUNCTION TO SELECT THE DATABASE
    if(!mysqli_select_db($con,DB_NAME))
        die('Could not select database');

Answer 3

在xammp servre中安装mysql包。否则你可以使用mysqli进行数据库连接。下面的代码用于连接mysqli oops和过程。

$conn = new mysqli (HOSTNAME,USERNAME,PASSWORD,DATABASE);

OR 

$conn = mysqli_connect(HOSTNAME,USERNAME,PASSWORD);

连接mysql数据库时出错

3 个答案: