Why it doesn't return?? PHP - php

Question

I can't understand and I seek for help=(
Here is my code:
$add_article = $this->M_articles->Add($_POST['title'], $_POST['content']);
echo "sd;flksdf;lksdfl;";
$add_article2 = true;
if ($add_article)
{
echo 'Article Added!';
header("Location:index.php");
die();
}
else
die('Error adding article');
this is function "Add" from M_Articles:
public function Add($title, $content)
{
/*
$title = trim($title);
$content = trim($content);
if ($title == '')
return false;
//запрос
$object = array();
$object['title'] = $title;
$object['content'] = $content;
$this->msql->Insert('articles', $object);
*/
return true;
}
The thing is...even if I comment everything from function "Add" and leave only "return true"... it wouldn't redirect me to index.php. Moreover, it doesn't even echo anything (even those "sd;fkfdsf.." string). The script just dies for some reason. I can't get where is the problem, can some1 explain to newbie what's the problem and how it should be fixed? If you need additional info, i'll provide it.
update: Maybe it's important...but if I delete those comment "/* */" things, it'd correctly add article to a DataBase. But then the script dies=/
update:
ok, now it says: "Notice: Undefined variable: result in Z:\home\myblog\www\c\M_MSQL.php on line 86"
here's my code for M_MSQL on line 86:
public function Insert($table, $object)
{
$columns = array();
$values = array();
foreach ($object as $key => $value)
{
$key = mysql_real_escape_string($key . '');
$columns[] = $key;
if ($value === null)
{
$values[] = "'$value'";
}
else
{
$value = mysql_real_escape_string($value . '');
$values[] = "'$value'";
}
}
$columns_s = implode(',', $columns);
$values_s = implode(',', $values);
$query = "INSERT INTO $table ($columns_s) VALUES ($values_s)";
$result = mysql_query($query);
if (!$result)
die(mysql_error());
return mysql_insert_id();
}

Answer 1

Reason is you are outputing things, so you have a notice : "Headers already sent".
If you remove the "echo" stuff, you'll be alright :
if ($add_article)
{
header('Location: /index.php?article_added=1');
}