PHP: Can't Set Cookie

Question

For some reason, I can't seem to set a cookie in one of my PHP files. All of the code works fine, except it refuses to set the cookie. I've placed different versions of cookie setting with different arguments, but it doesn't seem to make a difference. On top of that, I can set a cookie using that same line of code in a separate PHP file in the same directory. I've tried placing setcookie() at different places and I still get the same result. Am I missing something?

<?php
$table_name="lfgs";
$name=$_POST['name'];
$event="[";
$level=$_POST['level'];
$comments=$_POST['comments'];
$hours=$_POST['hours']*60*60;
$minutes=$_POST['minutes']*60;
$time=$hours+$minutes+time();

setcookie("remember", $name, $time, 'www.domain.com', '/');

if(isset($_POST['event'])){
    if (is_array($_POST['event'])) {
        foreach($_POST['event'] as $value){
            $event = $event . "\"" . $value . "\",";
        }
    } else {
        $value = $_POST['event'];
        $event = $event . "\"" . $value . "\"]";
    }
} else {
    $event = "";
}

if($event[strlen($event)-1] == ',') {
    $event = substr_replace($event ,"]",-1);
}

$con=mysqli_connect("domain.com","username","password","database");

$req="INSERT INTO $table_name(name, event, level, comments, time) VALUES ('$name', '$event', '$level', '$comments', '$time')";
mysqli_query($con,$req);

mysqli_close($con);

foreach($_COOKIE as $c) {
    echo $c . "<br />";
}
?>

Edit: This is ALL the code for the entire file.

Answer 1

According to the php reference, the correct way to use the setcookie function is

bool setcookie ( string $name [, string $value [, int $expire = 0 [, string $path [, string $domain [, bool $secure = false [, bool $httponly = false ]]]]]] )

Didn't you swaped the $path and $domain argument?

Try

setcookie("remember", $name, $time, '/', 'www.domain.com');

Answer 2

try

setcookie("remember", $name, '/', $time);