Google doesn't look at the PHP files on your server, they look at the generated HTML for your site.
So (using my site as an example)
- Go to the home page of your site (i.e. http://eamann.com)
- Right-click and select "View Source"
- Look in the
<head> element for a tag called <title>.
Example from my site:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en-US" xml:lang="en-US">
<head profile="http://gmpg.org/xfn/11">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<link rel="Shortcut Icon" href="http://eamann.com/wp-content/themes/eleven40/images/favicon.ico" type="image/x-icon" />
<link rel="stylesheet" href="http://eamann.com/wp-content/themes/eleven40/style.css" type="text/css" media="screen" />
<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
<!-- This site is optimized with the Yoast WordPress SEO plugin v1.2.8.4 - http://yoast.com/wordpress/seo/ -->
<title>Eric A Mann - The Things that Matter Most</title>
<link rel="canonical" href="http://eamann.com/" />
<link rel="author" href="https://plus.google.com/111597115655849308724/"/>
<!-- / Yoast WordPress SEO plugin. -->
You can see my title tag includes both my site title and tagline: <title>Eric A Mann - The Things that Matter Most</title>. Google will see and index this section.
My recommendation is to check your site's HTML output to be sure your theme is generating the right markup. If so, then you'll just have to wait until Google re-indexes your site.