About Mysql authorization in LAMP

About Mysql authorization in LAMP recently I learned how to build a LAMP environment. I installed centos6.2 on a virtual machine and used win to simulate remote logon. now I have encountered a problem. The virtual machine address is 192.168.159.129 & nbsp; I found this problem during Mysql Testing. how can I solve it ...... Warning: mysql authorization in LAMP
I recently learned how to build a LAMP environment. I installed centos6.2 on a virtual machine and used win to simulate remote logon. now I have encountered a problem. The virtual machine address is 192.168.159.129.
How can I solve this problem when I test Mysql ......
Warning: mysql_connect () [function. mysql-connect]: host' 192. 168.159.129 'is not allowed to connect to this MySQL server in/usr/local/apache2/htdocs/site/test. php on line 2
It seems that the mysql authorization is not properly configured. how can I set it or what kind of thinking? thank you!

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Mysql does not allow remote access by default.
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Log on to mysql from the local machine, go to the mysql database user table, find your connection user name, change the corresponding host to %, and then restart
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Discussion

The test file is written like this.
$ Conn = mysql_connect ("192.168.159.129", "root", "123") or die ("mysql server connects error ");
When accessing this file, the error is the one mentioned above.