SQL syntax showing date - php

Question

I'm trying to get my article to fetch how many comments it has, and display the number. Here's the code:
<?php
$amount_get = mysql_query("SELECT * FROM comment WHERE id='" . mysql_real_escape_string($_GET['articleid']) . "'");
$comments = mysql_num_rows($amount_get);
$grab = mysql_query("SELECT id, news_title, news_content, news_date, news_author FROM articles ORDER BY id DESC LIMIT 5");
while($row = mysql_fetch_array($grab)){
?>
<div class="pane">
<li>
<h2><?php echo $row['news_title'] ?></h2>
<div class="meta">
<span class="color"> • </span>
<?php echo $row['news_date'] ?>
<span class="color"> • </span>
</div>
Comments: <?php echo $comments ?>
but for some reason, it stays on "0". This is what it looks like:
and my columns are id, articleid,name,comment,date & ip.

Answer 1

Your where clause is looking for id = articleid.
What you want is where articleid = articleid.
$amount_get = mysql_query("SELECT * FROM comment WHERE articleid='" . mysql_real_escape_string($_GET['articleid']) . "'");

Answer 2

It looks like the SQL is faulty. Check your articleid GET variable. Also should it not be doing a different query and mysql_num_rows for each article's comments as each article likely contains different number of comments.
Try this:
SELECT
articles.id, news_title, news_content, news_date, news_author
(SELECT COUNT(*) FROM comment WHERE comment.id=articles.id) as comments
FROM articles
ORDER BY id DESC LIMIT 5
This will get you the first 5 articles and their related comment counts.

Answer 3

You could just use a single query.
$grab = mysql_query(
"SELECT a.id, a.news_title, a.news_content, a.news_date, a.news_author, count(*) as comment_count
FROM articles a
LEFT JOIN comment c ON c.articleid = a.id
ORDER BY a.id DESC LIMIT 5 GROUP BY a.id");
Then instead of
Comments: <?php echo $comments ?>
Do:
Comments: <?php echo $row['comment_count']; ?>
Let me know if the query is working, I'm not sure if the Group by is correctly placed there.