From Bugzilla Helper:
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:0.9.9) Gecko/20020311

Description of problem:
PHP should have this line:
  mysql.default_socket = /var/lib/mysql/mysql.sock
in the file:
  /etc/php.ini

Beacuse MySQL use by default the file socket /tmp/mysql.sock which one does not
exists

Version-Release number of selected component (if applicable):


How reproducible:
Always

Steps to Reproduce:
1. connect from a .php file to mysql
2. use localhost as the default host
3. you can't and get an error
	

Actual Results:  You can't connect to MySQL from PHP if you do not configure
/etc/php.ini

Expected Results:  you should be able to connect from PHP to MySQL using the
file socket /var/lib/mysql/mysql.sock

If you have a clean instalation of RedHat 7.2, you should be able to use MySQL
and PHP without the need to edit /etc/php.ini
This was the normal behavior in RH 7.1


Additional info: