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POUnderstanding cache limiter | headers already sent php warning
 

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  1. POUnderstanding cache limiter | headers already sent php warning
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    <p>I have a site that is functioning fine, but just by refreshing the main page (index_3.php) my error log populates with two warnings.</p> <pre><code>[08-Oct-2013 11:36:09] PHP Warning: session_start() [&lt;a href='function.session-start'&gt;function.session-start&lt;/a&gt;]: Cannot send session cache limiter - headers already sent (output started at /home2/mysite/public_html/mysubsite/index_3.php:7) in /home2/mysite/public_html/mysubsite/functions.php on line 12 [08-Oct-2013 11:36:09] PHP Warning: session_regenerate_id() [&lt;a href='function.session-regenerate-id'&gt;function.session-regenerate-id&lt;/a&gt;]: Cannot regenerate session id - headers already sent in /home2/mysite/public_html/mysubsite/functions.php on line 13 </code></pre> <p>I have researched enough to understand that something is sending the page data before the session begins, but I can't seem to root out the cause. functions.php is taken right from this tutorial site under "Create PHP Functions." <a href="http://www.wikihow.com/Create-a-Secure-Login-Script-in-PHP-and-MySQL" rel="nofollow">http://www.wikihow.com/Create-a-Secure-Login-Script-in-PHP-and-MySQL</a></p> <p>Also loading on index_3.php is get_opwire.php which just places a table. The beginning of get_opwire.php looks like:</p> <pre><code>&lt;?php include 'db_connect.php'; include 'functions.php'; sec_session_start(); </code></pre> <p><code>sec_session_start();</code> is a custom session start located in functions.php</p> <p>When I try to rearrange the order of the sec_session to the top or shift those around the table breaks. Index_3.php is just the main page, mostly html that has includes for a submit form and get_opwire.php</p> <p>Would someone be able to help point me to the problem?</p> <p>Edit: index_3.php (from line 1 through )</p> <pre><code>&lt;!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"&gt; &lt;html xmlns="http://www.w3.org/1999/xhtml"&gt; &lt;head&gt; &lt;meta http-equiv="Content-Type" content="text/html; charset=Windows-1252"/&gt; &lt;meta name="Generator" content="Xara HTML filter v.6.0.1.335"/&gt; &lt;meta name="XAR Files" content="index_htm_files/xr_files.txt"/&gt; &lt;title&gt;index_3&lt;/title&gt; &lt;meta name="viewport" content="width=device-width, initial-scale=1.0"/&gt; &lt;link rel="stylesheet" type="text/css" href="index_htm_files/xr_main.css"/&gt; &lt;link rel="stylesheet" type="text/css" href="index_htm_files/xr_text.css"/&gt; &lt;link rel="stylesheet" type="text/css" href="index_htm_files/custom_styles.css"/&gt; &lt;script type="text/javascript" src="index_htm_files/roe.js"&gt;&lt;/script&gt; &lt;!--[if IE]&gt;&lt;script type="text/javascript" src="index_htm_files/prs.js"&gt;&lt;/script&gt;&lt;![endif]--&gt;&lt;!--[if !IE]&gt;--&gt;&lt;script type="text/javascript" src="index_htm_files/prs3.js"&gt;&lt;/script&gt;&lt;!--&lt;![endif]--&gt; &lt;script type="text/javascript"&gt;var xr_nextpage=""; var xr_transition=0; var xr_transitiontime=0;var xr_prevpage="index_2.htm"; var xr_btransition=0; var xr_btransitiontime=500;&lt;/script&gt; &lt;style type="text/css"&gt;.xr_pbd {position: absolute; border:none; left: 50%; margin-left: -380px;}&lt;/style&gt; &lt;/head&gt; </code></pre> <p><strong>EDIT 2: somewhere inside index_3.php</strong></p> <pre><code>&lt;html&gt; &lt;body&gt; &lt;div style="width: 480px; height: 175px; overflow: auto;"&gt; &lt;?php include 'get_opwire.php'; ?&gt; &lt;/div&gt; &lt;/body&gt; &lt;/html&gt; </code></pre>
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    1. COThis error is pretty common when you already sent content to the client before the session_start() is called.
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    2. COYes, but going through I can't find any logical reason it's throwing this error. When I remove sec_session_start(); the error goes away but obvious it also breaks the table.
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