title: PHP: A session had already been started - ignoring session_start() comes only in windows
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/10648984/php-sessions-that-have-already-been-started">PHP sessions that have already been started</a>  </p>
  </blockquote>
  
  
  
  <p>I have run a my  PHP project on windows and also Mac  with same code . But I got this error when I run my project in windows not in Mac.</p>
  
  <p>error message is .</p>
  
  <pre><code>A session had already been started - ignoring session_start()
  </code></pre>
  
  <p>which is come only on Windows system. But In Mac I didnt get any error message. 
   Please any one give me a solution .....</p>