Retrieving data from ajax in php - php

Question

I have a simple ajax call firing on click of a button, sending the element's id attribute via POST, No errors and the data is being sent, I checked on the network console.
Therefore the next logical step is to think it's an issue with the php, in which i'm making a simple update statement, the issue is the php can't see the data passed by the ajax call. please see below:
AJAX:
$("a.report_btn").click(function() {
var url = "report_post.php"; // the script where you handle the form input.
$.ajax({
type: "POST",
url: url,
data: $("a.report_btn").attr("id"),
success: function(response) {
content.html(response);
$(".liked_success").show();
}, error:function(exception){alert('Exeption:'+exception);}
});
return false; // avoid to execute the actual submit of the form.
});
PHP:
<?php include 'db_connect.php';
$id =$_POST['id'];
try {
$sql = "UPDATE jobs_list
SET post_like = post_like+1, TimeStamp = TimeStamp
WHERE id=$id
LIMIT 1";
$statement = $dbh->prepare($sql);
$statement->bindValue("id", $id, PDO::PARAM_INT);
$statement->bindValue("post_like", $_POST['post_like'], PDO::PARAM_INT);
$count = $statement->execute();
$dbh = null; // Disconnect
}catch( PDOException $e ) {
echo 'Ops... something went wrong...'; // error message
var_dump($statement);
}
?>