title: Php session_start generating warning
body: <p>I am trying to run this code in my server</p>
  
  <pre><code>&lt;?php
  session_start();
  ?&gt;
  </code></pre>
  
  <p>I am getting following warning messages. I never saw such warning before . </p>
  
  <pre><code>Warning: session_start() [function.session-start]: open(/var/chroot/home/content/00/6684400/tmp/sess_uoouukt8m6efc0nc2ar5t2vq94, O_RDWR) failed: No such file or directory (2) in /home/content/00/6684400/html/html-tweetcomments/y.php on line 2
  
  Warning: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at /home/content/00/6684400/html/html-tweetcomments/y.php:2) in /home/content/00/6684400/html/html-tweetcomments/y.php on line 2
  
  Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /home/content/00/6684400/html/html-tweetcomments/y.php:2) in /home/content/00/6684400/html/html-tweetcomments/y.php on line 2
  
  Warning: Unknown: open(/var/chroot/home/content/00/6684400/tmp/sess_uoouukt8m6efc0nc2ar5t2vq94, O_RDWR) failed: No such file or directory (2) in Unknown on line 0
  
  Warning: Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct () in Unknown on line 0
  </code></pre>
  
  <p>how can i solve this problems?</p>