Database Insertion using ajax , not working - php

Question

I'm trying to insert data into a database using ajax and php , but this is not working. The connection with the database is working (tried it using only php). The ajax part of my code is posting and the values are valid (checked with firebug). I use postgresql for my data base
I don't know why it doesn't work.
When i press the comment button it works (i get no errors) , but the text in the fields doesn't go into the database
Here is the code:
<script type="text/javascript" src="http://ajax.microsoft.com/ajax/jquery/jquery-1.6.2.min.js">
</script>
<script type="text/javascript">
$(document).ready(function(){
$("#submit").click(function(event) {
var name = $("#name").val();
var title= $('#title').val();
var comment= $('#comment').val();
$.post("comment.php", {name: name, title: title, comment: comment},
function (data) {
if (!data) {
$("#submit").append("Failed to reach server. Login Error.");
} else {
alert(data);
}
});
return false;
});
});
</script>
<div class='comments'>
<!--<form action="scripts/comment.php" method="POST"> -->
<form action="" method="POST">
<label>Name: </label><br /><input id="name"type="text" name="name" /><br /><br />
<label>Title: </label><br /><input id="title"type="text" name="title" /><br /><br />
<label>Comment: </label><br /><textarea id="comment" name="comment" cols="90" rows="7"> </textarea><br /><br /><br />
<input id="submit" type="submit" name="submit" value="Comment" /><br />
</form>
<hr width=auto size="5px" />
</div>
And the php for insertion:
<?php
if (isset($_POST['name'])) {
// attempt a connection
$conn_string = "host= port= dbname= user= password=";
$dbh = pg_connect($conn_string);
if (!$dbh) {
die("Error in connection: " . pg_last_error());
}
$name =pg_escape_string($_POST['name']);
$title= pg_escape_string($_POST['title']);
$comment =pg_escape_string($_POST['comment']);
$today=pg_escape_string(date('d-m-y'));
$sql = "INSERT INTO comments VALUES ('$name','$comment','$today','$title',nextval('comments_id_seq'::regclass))";
$result = pg_query($dbh, $sql);
if (!$result) {
die("Error in SQL query: " . pg_last_error());
}
pg_close($dbh);
// $page='../index.php';
//header('Location:'.$page);
}
?>
Any help would be appreciated :) . Thanks

Answer 1

Your $.post() call disregards the server's response which makes troubleshooting difficult. There are a few things you can to do correct this:
First, ensure that you have turned on PHP error reporting. If it is not turned on in your config, enable it near the beginning of your script like this:
error_reporting(E_ALL);
Next, find a way to see the output of your PHP script. You can modify your post call to receive and process the response, but an easier way is to temporarily post your HTML form directly to the script bypassing the AJAX call. See what output the script produces when you post the form directly to the script.