if isset($_POST issue - php

Question

I have one instance of where a user on my PHP site can login, and I'm trying to make a second where administrators can post announcements.
My login works beautifully, but for some reason I can't get my announcement submission to work. Despite my input fields being named appropriately, the field is being seen as "not set" when I type in a title and announcement on my form. Here is my code:
FORM:
<form action="announce.php">
<input type="text" name="title" />
<textarea name="announce" cols="20" rows="2" ></textarea>
<input type="submit" name="submit" value="Announce" />
</form>
Here is my PHP:
include_once 'creds.php';
$con=mysqli_connect("$db_hostname","$db_username","$db_password","$db_database");
if (isset($_POST['title']))
{
$title = $_POST['title'];
$announce = $_POST['announce'];
$query = "INSERT INTO announcements (labname, name, author, announce)
VALUES ($lab, $title, $username, $announce)";
$insert = mysqli_query($con, $query);
mysqli_close($con);
echo "added successfully";}
else
{
echo "something went wrong";
}
My other form seems to work but this one doesn't... is my syntax wrong somewhere?

Answer 1

Your form is submitting as a GET request, not POST.
Change this line:
<form action="announce.php">
to this:
<form action="announce.php" method="post">
Edit: I should really refresh the page before posting. All credit to noobie-php for getting this right in their comment 30 mins before I posted this!

Answer 2

Php :
include_once 'creds.php';
$con=mysqli_connect("$db_hostname","$db_username","$db_password","$db_database");
if (isset($_POST['submit']))
{
$title = $_POST['title'];
$announce = $_POST['announce'];
$query = "INSERT INTO announcements (labname, name, author, announce)
VALUES ($lab, $title, $username, $announce)";
$insert = mysqli_query($con, $query);
mysqli_close($con);
echo "added successfully";}
else
{
echo "something went wrong";
}
i think if (isset($_POST['submit'])) this is the problem.