Cant create cookies when website is online - php

Question

when i try to create a cookie with PHP they are not saved when the website is online.
When i'm on the localhost, its all okay.
For example:
setcookie('user_register', 'username', time() + 3600, '/');
How can i troubleshoot this? Is there any config in cpanel to disable cookie creation ?
Thankyou

Answer 1

You say it works on localhost, which alerts me to think that you have placed the setcookie below output like this for example:
<?php
// top of file
Echo "saving cookie";
setcookie('user', 'username', 3600, '/');
?>
This may work on localhost but will always fail on a real php server.
Setcookie is a header and must be placed before any output as stated in the manual http://php.net/manual/en/function.setcookie.php
To make the code above work you need to chaange place of the echo and setcookie so that it first sets the cookie and then outputs the text:
<?php
// top of file
setcookie('user', 'username', 3600, '/');
Echo "saving cookie";
?>
Then to read the cookie you need to go to a new page or refresh the page.
Cookies can't be set and read at the same time in php.
So to complete the code we can do like this:
<?php
// top of file
If($_COOKIE(['user']){
Echo $_COOKIE(['user']);
}Else{
setcookie('user', 'username', 3600, '/');
Echo "saving cookie";
}
?>
Now you can set the cookie and read it on the same page if you refresh the page.

Answer 2

Cookies are used next time you visit the page. So there are 3 general solutions: 1. Save it to cookie and for first time, just echo POST variables instead of COOKIE. Code will look like this:
setcookie('user', $_POST['user'], time()+3600); // notice time() function
setcookie('pass', $_POST['pass'], time()+3600); // you cant use absolute value here
if (!isset($_COOKIE['user'])) echo $_POST['user'] . ' ' . $_POST['pass'];
else echo $_COOKIE['user'] . ' ' . $_COOKIE['pass'];
, but if you really want to store password in cookie (very bad idea), then at least hash it. Code with hashing could look like this:
setcookie('pass', hash(whirlpool/*algorithm*/, $_POST['pass']/*text*/), time()+3600);
, then when you check the password, just hash it and compare hashes.

Answer 3

You cannot send and receive cookie in the same request. Here is a modification you should try
if(isset($_POST['user']) && isset($_POST['pass'])){
setcookie("user",$_POST['user'],3600);
setcookie("pass",$_POST['pass'],3600);
header("location:".$_SERVER['PHP_SELF']);
}
if(isset($_COOKIE['user']) && isset($_COOKIE['user']))
{
echo $_COOKIE["user"] . " " . $_COOKIE["pass"]; // This is line 28
}
However, it advisable to use sessions instead. Start by going through PHP_SESSION