SQLSTATE [HY000] [2002] yii2中没有这样的文件或目录

Question

我用ubuntu 16.04.
PHP Version 7.0.4-7ubuntu2.
Apache/2.4.18 (Ubuntu).
PHP extension: mysqli(在phpmyadmin撰写).

我从我的ubuntu升级15.10 to 16.04,我有这个错误:

我的项目在我的服务器中正确运行,但我无法在我的操作系统中运行:

Database Exception – yii\db\Exception
SQLSTATE[HY000] [2002] No such file or directory
?
Caused by: PDOException
SQLSTATE[HY000] [2002] No such file or directory

in /var/www/html/iicitySite/vendor/yiisoft/yii2/db/Connection.php at line 579

Answer 1

将"localhost"更改为"127.0.0.1"作为主持人

return [
    'components' => [
        'db' => [
            'class' => 'yii\db\Connection',    
            'dsn' => 'mysql:host=127.0.0.1;dbname=abc',
            'username' => 'root',
            'password' => '',
            'charset' => 'utf8',
        ],

Answer 2

对于 MAMP 用户，解决方案是

'components' => [
    'db' => [
        'class' => 'yii\db\Connection',
        'dsn' => 'mysql:host=localhost;port=8889;dbname=mydbname;unix_socket=/Applications/MAMP/tmp/mysql/mysql.sock',
        'username' => 'myuser',
        'password' => 'mypassword',
        'charset' => 'utf8',
    ],
],