warning error

rockinglide

Please help as I am a newbie🙂
Below appears on web page;

Warning: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at /home/content/84/8808484/html/contact.php:11) in /home/content/84/8808484/html/contact.php on line 168

Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /home/content/84/8808484/html/contact.php:11) in /home/content/84/8808484/html/contact.php on line 168

The code below starting with Line 166;
Line 166<?php

Line 168session_start();

if( isset($_POST['submit'])) {

$name = (isset($POST['name']) ? trim($POST['name']) : '');

$email = (isset($POST['email']) ? trim($POST['email']) : '');

$phone = (isset($POST['phone']) ? trim($POST['phone']) : '');

$comments = (isset($POST['comments']) ? trim($POST['comments']) : '');

bradgrafelman

No output can be sent before you try to modify HTTP response headers -- including, for example, things like setting a cookie (as is common with [man]session_start/man, i.e. you're using cookies to propagate the session ID from one page request to another).

As such, you should be calling session_start() before you have any output.

rockinglide

Thank you for the help. However, I am so new at this that I don't know what the "output" is.
I appreciate the help. Thanks.

bradgrafelman

rockinglide;10996080 wrote:
I don't know what the "output" is.

That'd be anything that isn't PHP code (e.g. outside of <?php ... ?> tags), anything passed to [man]echo[/man] or [man]print[/man] (or variations of the latter), etc.

For example, the first instance of anything being sent as output is noted by filename and line number in the error message itself (look for the 'output started at' text).