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POupdate column where id =?
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  1. POupdate column where id =?
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    copied!<p>Im trying to update a column ('content') in my table ('ptb_messages') where the 'id' of the message is the same as the one being echoed in my form upon submit so WHERE id='".$message_id." which is a global function ive set. the id of the message is being echoed fine the problem is in the function or mysql script.</p> <p>can someone perhaps show me where im going wrong with this. thanks</p> <p>html form:</p> <pre><code> &lt;form id="reply" action="message_reply.php?to=&lt;?php echo "".$message_id.""; ?&gt;" method="post"&gt; &lt;textarea name="textarea" id="textarea"&gt;&lt;?php echo "{$message['content']}"; ?&gt;&lt;/textarea&gt; &lt;?php } ?&gt; &lt;input type="image" src="assets/img/icons/email_send.png" width="50" height="34" name="send_button" id="send_button"&gt; &lt;/form&gt; mysql function: &lt;?php require_once("includes/session.php"); require_once("includes/functions.php"); require('includes/_config/connection.php'); ?&gt; &lt;?php session_start(); include 'includes/_config/connection.php'; $textarea = $_POST['textarea']; $result = mysql_query("SELECT content FROM ptb_messages WHERE id='".$message_id."'"); if(!$result) { echo "The username you entered does not exist"; } else if($textarea!= mysql_result($result, 0)) { echo ""; $sql=mysql_query("UPDATE ptb_messages SET content ='".addslashes($textarea)."' WHERE id='".$message_id."'"); } if($sql) { } header("Location: {$_SERVER['HTTP_REFERER']}"); ?&gt; </code></pre> <p>i receive these errors:</p> <pre><code>Warning: mysql_result() [function.mysql-result]: Unable to jump to row 0 on MySQL result index 9 in /Applications/XAMPP/xamppfiles/htdocs/ptb1/message_reply.php on line 25 Warning: Cannot modify header information - headers already sent by (output started at /Applications/XAMPP/xamppfiles/htdocs/ptb1/message_reply.php:25) in /Applications/XAMPP/xamppfiles/htdocs/ptb1/message_reply.php on line 37 </code></pre>
 

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