title: Codeigniter blank page and error 500 in apache log?
body: <p>I spent over 5 hours yesterday trying to figure out whats wrong with my setup. In the ci213/application/controllers and views directories I have a simple site.php controller and test.php view. I'm out of ideas as to why this site wont load. Anyone have suggestions on what I could look for next? Maybe logging it's working properly? If I could get better log errors I could have more to work with.</p>
  
  <p>I figured it has to be something with codeigniter since I have an index.php and index.html at apaches root (/var/www) and also an index2.php at the sites root (/var/www/vhosts/srp-local/htdocs), when I go to localhost/index.(php|html) or srp-local/index2.php the pages load and display properly so php and apache are working.</p>
  
  <p>Trying to load the site I get a blank page so I figured it has to be something with CI. I'm tailing all the log files and the only one that gets an update is the site access.log with the following error.</p>
  
  <pre><code>127.0.0.1 - - [23/Mar/2013:09:00:28 -0600] "GET / HTTP/1.1" 500 381 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:19.0) Gecko/20100101 Firefox/19.0"
  </code></pre>
  
  <p>config.php</p>
  
  <pre><code>$config['base_url'] = 'http://srp-local/'; # My hosts file is configured for this.
  $config['log_threshold'] = 4;
  $config['log_path'] = '/var/www/vhosts/srp-local/logs/ci_error.log';
  </code></pre>
  
  <p>controllers/site.php</p>
  
  <pre><code>&lt;?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
  class Site extends CI_Controller
  {
      public function index()
      {
          $this-&gt;load-&gt;view('test');
      }
  }
  </code></pre>
  
  <p>views/test.php</p>
  
  <pre><code>&lt;html&gt;
  &lt;head&gt;
  &lt;/head&gt;
  &lt;body&gt;
  &lt;?php echo "PHP is working and the 'test' view was loaded"; ?&gt;
  &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>Apache Root</p>
  
  <pre><code>/var/www/vhosts
  $ ll
  drwxrwsr-x  6 krizzo www-data 4096 Mar 22 10:45 it355
  drwxrwsr-x  6 krizzo www-data 4096 Mar 22 17:45 srp-local
  </code></pre>
  
  <p>htdocs is the webroot for srp-local and it's index.php is referred to the ci213 folder.</p>
  
  <pre><code>/var/www/vhosts
  $ ll srp-local/
  drwxrwsr-x 2 krizzo www-data 4096 Mar 22 17:06 cgi-bin
  drwxrwsr-x 4 krizzo www-data 4096 Mar 22 17:14 ci213
  drwxrwsr-x 2 krizzo www-data 4096 Mar 22 17:19 logs
  drwxrwsr-x 5 krizzo www-data 4096 Mar 22 17:26 htdocs
  </code></pre>
  
  <p>All log locations/permissions</p>
  
  <pre><code>/var/log/apache2/
      -rw-rw-rw- 1 www-data adm     0 Mar 23 08:52 php_errors.log
      -rw-r----- 1 root     adm 12191 Mar 23 09:32 access.log
      -rw-r----- 1 root     adm  4858 Mar 23 09:32 error.log
  
  /var/www/vhosts/srp-local/logs/
      -rw-r--r-- 1 root   www-data  3227 Mar 22 19:42 error.log
      -rw-rw-r-- 1 krizzo www-data     0 Mar 23 09:37 ci_error.log
      -rw-r--r-- 1 root   www-data 12983 Mar 23 09:38 access.log
  </code></pre>
  
  <p>php.ini file settings</p>
  
  <pre><code>error_reporting = E_ALL &amp; ~E_DEPRECATED
  log_errors = On
  error_log = /var/log/apache2/php_errors.log
  </code></pre>