Parse current branch name from Git repository and conditionally set WordPress database name.

gistfile1.php

<?php
$git_head = file('.git/HEAD', FILE_USE_INCLUDE_PATH);
$git_head = $git_head[0]; //get the string from the array
$git_head = explode("/", $git_head); //separate out by the "/" in the string
$branch_name = trim($git_head[2]); //get the one that is always the branch name
 
if($branch_name == "master")
{
  /** The name of the database for WordPress */
	define('DB_NAME', 'wordpress_local');
}
else
{
	define('DB_NAME', 'wordpress_new');
}