If you are using Laravle 5.1.11 version + MAC + MAMPP
you have to add "Unix_socket " in file "yourapp"/app/config/database.php
'mysql' => [
'driver' => 'mysql',
'host' => env('DB_HOST', 'localhost'),
'unix_socket' => '/Applications/MAMP/tmp/mysql/mysql.sock',
'database' => env('DB_DATABASE', 'forge'),
'username' => env('DB_USERNAME', 'forge'),
'password' => env('DB_PASSWORD', ''),
'charset' => 'utf8',
'collation' => 'utf8_unicode_ci',
'prefix' => '',
'strict' => false,
],
Unix_socket param was added to above mysql config drive.