I have a page that uses a template system like smarty. I have a JS function that calls this php file to add some user input to a db and the page. I'm getting the cannot modify header information error. While I know the reason behind this error, I cannot seem to find in my code where I'm setting some sort of header information after html has been set. Here is the add input file that gets called by JS on a button click that is causing the header error. I should also mention this runs fine on my dev server but not on my live server
<?php
require_once("IT.php");
require_once("functions.php");
connect();
$input = mysql_real_escape_string($_GET['input']);
$fb = mysql_real_escape_string($_GET['fbLink']);
$twt = mysql_real_escape_string($_GET['twtLink']);
$cust = mysql_real_escape_string($_GET['custLink']);
close();
$time = time();
$code = $_GET['code'];
//check the captcha
include("securimage/securimage.php");
$img = new Securimage();
$valid = $img->check($code);
if($valid == true){
//make sure that we have some input
if($input != "" && $input != "Enter something about yourself, a funny quote, or just about anything you want to identify yourself here..."){
if($fb == "Your facebook page"){
$fb = "";
}//if fb
if($twt == "Your twitter page"){
$twt = "";
}//if fb
if($cust == "Your blog or website"){
$cust = "";
}//if fb
$query = "insert into messages(text, facebook, twitter, custom, up, date) values('{$input}', '{$fb}', '{$twt}', '{$cust}', 0, '{$time}');";
$lastReplace = stripslashes($_GET['input']);
if(runQuery($query)){
$temp = (mysql_insert_id());
$_SESSION['posted'] = time();
//check the message length
$output = checkMessage($lastReplace, $temp);
$_SESSION['hasInput'] = "Yes";
echo("<div class=\"bubbleTop\">
</div>
<div class=\"bubbleMiddle\">
<div id=\"\" class=\"bubbleContent\">".html_entity_decode($output)."</div>
<table style=\"width: 285px;\">
<tbody><tr>
<td align=\"right\">");
echo($fb != "" ? "<a href=\"$fb\" target=\"_blank\"><img src=\"images/buttons/facebook.png\" style=\"border: none;\"></a> " : "");
echo($twt != "" ? "<a href=\"$twt\" target=\"_blank\"><img src=\"images/buttons/twitter.png\" style=\"border: none;\"></a> " : "");
echo($cust != "" ? "<a href=\"$cust\" target=\"_blank\"><img src=\"images/buttons/site.png\" style=\"border: none;\"></a> " : "");
echo("<img id=\"plus{$temp}\" src=\"images/buttons/plus.png\" onclick=\"plusClick('{$temp}')\" style=\"border: none; cursor: hand;\">");
echo("</td>
</tr>
</tbody></table>
</div>
<div class=\"bubbleBottom\">
</div>
<br>
<br>
</div>");
}//if runQuery
else{
echo("error");
}//else
}//if input
else{
echo("error");
}//else
}//if valid == ture
else{
echo("wrong code");
}//else
?>