Question

这是我连接数据库的代码：

$datbase=mysqli_connect("localhost:82","root"," ");
if(!$datbase)
{
    die("connection failed".mysqli_connect_error());
}

它告诉我

Warning: mysqli_connect(): MySQL server has gone away in C:\Program Files\apache24\Apache24\htdocs\PhpProject3\php_DataBase.php on line 9

Warning: mysqli_connect(): Error while reading greeting packet. PID=10848 in C:\Program Files\apache24\Apache24\htdocs\PhpProject3\php_DataBase.php on line 9

Warning: mysqli_connect(): (HY000/2006): MySQL server has gone away in C:\Program Files\apache24\Apache24\htdocs\PhpProject3\php_DataBase.php on line 9

第9行是database=mysqli_connect("localhost:82","root"," ")

Answer 1

此行中出错，同时也删除了密码中的空格

$datbase=mysqli_connect("localhost:82","root"," ");

您没有连接到MySQL，而是连接到Apache服务器。如果您没有更改MySQL端口，请使用

$datbase=mysqli_connect("localhost","root","","databaseName");

Answer 2

您应该先阅读http://php.net/manual/en/function.mysqli-connect.php。

$link = mysqli_connect("host", "my_user", "my_password", "my_db");

试试这个：

$datbase=mysqli_connect("localhost","root","","my_db");
if(!$datbase)
{
    die("connection failed".mysqli_connect_error());
}

Answer 3

用

替换此行

 $datbase=mysqli_connect("localhost:82","root"," ");

这一个

   $datbase=mysqli_connect("localhost","root","","your database name");

Answer 4

您正在使用localhost上未在php.ini文件

中设置的端口号

试试这个

//$datbase=mysqli_connect("localhost","username","password","databaseName");

$datbase=mysqli_connect("localhost","root","","databaseName");

Answer 5

如果您的Mysql服务器以default settings运行，则表示。您不需要指定端口号。否则，您需要将port number指定为5th参数。如下例所示。

Mysql默认端口号为3306

$datbase=mysqli_connect("localhost","username","password","database_name","port_number");
if(!$datbase)
{
     die("connection failed".mysqli_connect_error());
}

当我以前用php编程语言中使用netbeans连接phpmyadmin时，我遇到了一些错误

5 个答案: