CakePHP 数据库连接“Mysql”丢失，或无法创建

Question

There have been several other posts about this, but none of the answers seemed to work for me.

When I navigate to the CakePHP page on my local machine, there is one error:

Cake is NOT able to connect to the database. Database connection "Mysql" is missing, or could not be created.

When I run this helpful code in my home.ctp, I get the following response:

Error!: SQLSTATE[42000] [1049] Unknown database 'test'

However, my Users/Ben/Sites/myapp/app/Config/database.php looks like this (I set MAMP to look for the document root in Users/Ben/Sites):

<?php
class DATABASE_CONFIG {

    public $default = array(
        'datasource' => 'Database/Mysql',
        'persistent' => false,
        'host' => 'localhost',
        'login' => 'Ben',
        'password' => 'mypass',
        'database' => 'CV',
    );
}

I have created a mysql user called Ben with password mypass and created a database called CV under that. Moreover, I can't find mention of a test database anywhere. Help?

Answer 1

尝试添加套接字：

'unix_socket' => '/Applications/MAMP/tmp/mysql/mysql.sock',

Answer 2

An alternative to unix_socket (especially for OS X people) is to replace localhost with 127.0.0.1

Would be as Follows :

public $default = array(
                'datasource' => 'Database/Mysql',
                'persistent' => false,
                'host' => '127.0.0.1',
                'login' => 'user',
                'password' => 'password',
                'database' => 'database-name',
                'prefix' => '',
                'encoding' => 'utf8',
        );

Answer 3

Edit php.ini and add:

extension=php_pdo_mysql.dll 

Then restart your web server

Answer 4

On Mac, using MAMP as a development platform, for cake the correct solution is using Domingo Casarrubio solution.

Add the unix_socket parameter to your database configurations.

'unix_socket' => '/Applications/MAMP/tmp/mysql/mysql.sock',

Answer 5

This error can also be caused if your connecting database user doesn't have the proper privileges. I believe you only need a minimum of INSERT, SELECT, UPDATE, and DELETE.

Always check username/password and the user privileges first since CakePHP will most likely give a vague database connection error for either.

Answer 6

I noticed that you've had asked this an year ago, and most probably would've solved this by now. However, for those facing the same issues when attempting to install CakePHP on XAMPP, all you have to do is change the 'login' to 'root', ie the default login of XAMPP, and leave the 'password' as '', ie blank. The complete code in your database.php file should look like this:

public $default = array(
    'datasource' => 'Database/Mysql',
    'persistent' => false,
    'host' => 'localhost',
    'login' => 'root',
    'password' => '',
    'database' => 'ckblog',//replace with your own database name
    'prefix' => '',
    //'encoding' => 'utf8',
);

That's it.

Answer 7

I had the same problem and found out eventually that it was caused by CakePhp not accepting that I used a user with a password, even if that user was created in PHPMyAdmin. I had to use the user 'root' with no password.

I found this out after making the following change to the file /lib/Cake/Error/exceptions.php .

The original line:

protected $_messageTemplate = 'Database connection "%s" is missing, or could not be created.';

is changed into this instead (note the change from single to double quotes):

protected $_messageTemplate = "Database connection \"%s\" is missing, or could not be created:\n    %s";

This will give you the reason for the problem so that you may change the cause properly.

Answer 8

自从升级到 OSX Yosemite 并插入以下行后，我就遇到了这个问题：

 'unix_socket' => '/tmp/mysql.sock'

Answer 9

It can be that mysql PDO support is missing.

as root (or using sudo):

apt-get install php5-mysql

Answer 10

Just to help Ubuntu users out: I had the same error in my ubuntu 13.10 machine with the newest xampp downlaoded directly from apachefriends. Tried most of the stuff in every post I could find about this error, but not the mac-specific stuff. In the end, the fix happened to be the same as the elected answer here:

Find the socket that mysqld creates for programs to connect to:

user@host /opt$ find . -name mysql.sock
/opt/lampp/var/mysql/mysql.sock

add it to your cakePHP database configuration file (cakePHP)/app/Config/database.php

'unix_socket' => '/opt/lampp/var/mysql/mysql.sock'

To me, this finally resulted in my cake commands being able to be executed without the " Error: Database connection "Mysql" is missing, or could not be created. ".

Answer 11

Because, cake bake use unix socket for connecting to database
so that you need add unix_socket for connection string.
You have to confirm location that store mysql.sock in WAS
Example: in my case i'm using xampp on MACOS 10.11
(edit file Config/database.php)

public $default = array(
  ‘datasource’ => ‘Database/Mysql’,
  ‘persistent’ => false,
  ‘host’ => ‘localhost’,
  ‘login’ => ‘root’,
  ‘password’ => ‘root’,
  ‘database’ => ‘cakephp’,
  ‘encoding’ => ‘utf8’,
  ‘unix_socket’ => ‘/Applications/XAMPP/xamppfiles/var/mysql/mysql.sock’
);

Finally, It's work for me!

Answer 12

What did it for me in the end was that I had created a table in my database, but there was no data in it.

In order for CakePHP to recognize the MySql connection, there has to be a table with data in it.

Answer 13

您可能需要在 php 文件中创建表...打开 phpMyAdmin 并检查以确保它们的数据库 CV 存在。

Answer 14

It's your model. Open that up and there must be the following line

public $useDbConfig = 'local';

This overwrites global config & set it back to local

Answer 15

I tried splicing the code from Example 2 of http://php.net/manual/en/pdo.connections.php into /app/View/Pages/home.ctp. I had to fix the arguments the PDO constructor and change the name of the table in the query. The example 2 code returned the error "Error!: could not find driver". Based on King Jk's answer I was attempting to modify the php.ini when I started to wonder where a php_pdo_mysql.so might live. http://php.net/pdo_mysql showed how it was compiled as part of PHP via the --with-pdo-mysql option to configure. Recompiling fixed my problem. Note I'm working on a Ubuntu 12.10 system with PHP 5.5.9 and Apache Webserver 2.4.6

Answer 16

In my case it was because the database didn't exist. I expected running ./app/Console/cake schema create would create it but it did not. Creating it with create database <database name> in mysql did the trick (although I had already assigned privileges).

Answer 17

I've been struggling with this the whole weekend and finally solved it. Turns out that the php.ini is pointing to a non-existing "extensions dir". Create a phpinfo() file and look at the value of this field:

I noticed that in the mamp php installed folder there is a no-debug-non-zts-20131226 folder, which is different from the value shown in the phpinfo(). What I did was to clone this folder and changed the name to the value of the phpinfo(). Probably you could modify the php.ini file but I didn't want to.

I don't know if you solved your problem, but I'm posting this because my problem was different and google took me here, so I hope to help future googlers having a similiar issue.

Hope this helps.

Answer 18

如果您使用的是 Godaddy（或任何其他与此相关的共享主机），他们可能会将传出连接限制为仅端口 80 和 443。

Answer 19

System configuration:

• Fedora 32
• php-fpm 7.4.13
• mariadb 10.4.17
• CAKE 2.10.17

Error message from CAKE:

Database connection "Mysql" is missing, or could not be created.

Enhanced error message using answer at https://stackoverflow.com/a/24722976/5025060

Database connection "Mysql" is missing, or could not be created: Selected driver is not enabled

My problem was no "connector" between PHP and SQL was installed. The solution was:

dnf install php-mysqlnd

This allowed PHP to connect to the database as specified in CAKE's database.php configuration file.