Connecting to MYSQLi through Terminal in Mac OS using MAMP

问题

I am trying to run my PHP script via Terminal in Mac. When I try to run the script, I am getting this error:

Warning: mysqli_connect(): (HY000/2002): No such file or directory

This is how I am trying to connect:

mysqli_connect('localhost','root','root','my_db');

I also tried to connect using the host: 127.0.0.1 instead of localhost and I then got this error:

Warning: mysqli_connect(): (HY000/2002): Connection refused

From what I've read online it might have something to do with mysql socket, but whatever I try to do to get this to work doesn't help.

I even tried to connect using the following as my host:

:/Applications/MAMP/tmp/mysql/mysql.sock

:/var/mysql/mysql.sock

Any idea what can be the problem/solution?

回答1:

Had the same issue. Here's what I did.

1. Open Terminal (/Applications/Utilities/terminal.app)

2. Use your favorite text editor to create/edit ~/.bash_profile. For instance, if you're using vim, type vim ~/.bash_profile. I use TextMate, so I typed mate ~/.bash_profile.

3. Add these lines:

   export MAMP_SQL=/Applications/MAMP/Library/bin 
   export MAMP_PHP=/Applications/MAMP/bin/php/php5.5.10/bin
   export PATH="$MAMP_SQL:$MAMP_PHP:$PATH"
   

   These lines ensure that the first versions of MySQL and PHP that are found (and therefore used) are the versions used by MAMP. NB: Make sure that php5.5.10 matches the version MAMP is using. You can check this against http://localhost:8888/MAMP/index.php?page=phpinfo&language=English by default. SAVE THE FILE (I shouldn't have to save this, but invariably someone complains that it doesn't work).

4. Close your terminal window and reopen. This restarts the shell, which will load your .bash_profile script.

5. Type which php. You should get something akin to /Applications/MAMP/bin/php/php5.5.10/bin/php

6. Type which mysql. You should get something akin to /Applications/MAMP/Library/bin/mysql

If for any reason you get something different than the responses from 5 and 6, go back and check your .bash_profile; chances are you just neglected to save it properly.

回答2:

If you have MySQL installed on your computer, you can do the following command:

mysql -u "username"

replacing "username" with the username of your computer

NOTE: often times root does not work, try the username of your computer

来源：https://stackoverflow.com/questions/20458864/connecting-to-mysqli-through-terminal-in-mac-os-using-mamp