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How to connect other mysql in terminal?

There are some problems in my mac. One of the Problems is that there are two mysqls in computer. First mysql is executed at localhost and second one is at MAMP. Because of this, when i tryed to connect mysql using php

<?phpmysqli_connect('localhost','root','$password','dbname') ?>

, it is connected to MAMP mysql.

And when i tryed to connect mysql using terminal, it is connected to localhost mysql. So i can't do what i want...(When i make some db(named 'dbname') and try to connect at my html, it makes an error Warning: mysqli_connect(): (42000/1049): Unknown database 'dbname' )

What should i do to make it work?..

you can learn how to connect with mysqli in php here

http://www.w3schools.com/php/php_mysql_connect.asp

or connect in terminal like this

/Applications/MAMP/Library/bin/mysql --host=localhost -uroot -proot

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