Data not being inserted mysql - php

Question

I am building a custom CMS for myself and its going great but for some reason the system is not inserting a certain field called categories. I have a table called categories and i am able to insert those categories with no problems.
On my addnewpost.php page I have this form field that lets me select an added Category..
<select name="Category" id="categorytitle" class="form-control">
<?php
$sql = "SELECT id,title FROM category";
$stmt = $conn->query($sql);
while ($DataRows = $stmt->fetch()){
$id = $DataRows["id"];
$CategoryName = $DataRows["title"];
?>
<option value=""><?php echo $CategoryName; ?></option>
<?php } ?>
</select>
above all that I have this to inset the data into the database in a table called posts...
<?php
if(isset($_POST["Submit"])){
$posttitle = $_POST["posttitle"];
$Category = $_POST["Category"];
$image = $_FILES["image"]["name"];
$target = "../uploads/".basename($_FILES["image"]["name"]);
$posttext = $_POST["postdescription"];
$admin = "phillip";
date_default_timezone_set("Europe/London");
$CurrentTime=time();
$DateTime=strftime("%B-%d-%Y %H:%M:%S",$CurrentTime);
if(empty($posttitle)){
$_SESSION["ErrorMessage"] = "Post title cannot be empty";
redirect_to("addnewpost.php");
} elseif (strlen($posttitle)<10){
$_SESSION["ErrorMessage"] = "Post title should be greater than 10 characters";
redirect_to("addnewpost.php");
} else {
//All is good insert into the database
$sql = "INSERT INTO posts(datetime,title,category,author,image,post)";
$sql .= "VALUES(:dateTime,:postTitle,:categoryName,:adminName,:imageName,:postDescription)";
$stmt = $conn->prepare($sql);
$stmt->bindValue(':dateTime',$DateTime);
$stmt->bindValue(':postTitle',$posttitle);
$stmt->bindValue(':categoryName',$Category);
$stmt->bindValue(':adminName',$admin);
$stmt->bindValue(':imageName',$image);
$stmt->bindValue(':postDescription',$posttext);
$Execute=$stmt->execute();
move_uploaded_file($_FILES["image"]["tmp_name"],$target);
if($Execute){
$_SESSION["SuccessMessage"]="Post with id : ".$conn->lastInsertId()." Added Successfully";
redirect_to("addnewpost.php");
} else {
$_SESSION["ErrorMessage"]="Something went wrong. Try again";
redirect_to("addnewpost.php");
}
}
}
?>
Here is a screengrab showing that the category fields are empty. I do have display errors enabled but none are showing up. Any thoughts appreciated...

Answer 1

Thank you Nigel and Felippe. I just took out the option value so it's just this instead...
<option><?php echo $CategoryName; ?></option>
That's made it all work perfectly. Been looking at this for hours as well.
Thank you both.

Answer 2

<select name="Category" id="categorytitle" class="form-control">
<?php
$sql = "SELECT id,title FROM category";
$stmt = $conn->query($sql);
while ($DataRows = $stmt->fetch()){
$id = $DataRows["id"];
$CategoryName = $DataRows["title"];
?>
<option value="<?php echo $CategoryName; ?>"><?php echo $CategoryName; ?></option>
<?php } ?>
</select>
This is more like it