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Blog help

Posted: Sun Jul 08, 2012 5:10 pm
by FrederickGeek8
I am part 4 of the Blog and Commenting System tutorial and I have run into a problem.

When I go to blog_list.php it shows everything correctly, but the date posted does not appear. I checked over the sql and I didn't see and errors. Also there are no php errors showing (I have confirmed that I have error reporting enabled).

Here is my code

blog_list.php (modified)
<?php

include('core/init.inc.php');

?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8;" />
        <title>News</title>
    </head>
    <body>
        <div>
            <?php
            
            $posts = get_posts();
            
            foreach ($posts as $post){
                ?>
                <h2><?php echo $post['title']; ?></h2>
                <h4>By <?php echo $post['user']; ?> on <?php $post['date']; ?></h4>
                
                <hr />
                
                <p><?php echo $post['preview']; ?></p>
                <?php
            }
            
            ?>
        </div>
    </body>
</html>
posts.inc.php (modified to allow html in posts)
<?php
// checks if the given post id is in the table.
function valid_pid($pid){
	$pid = (int)$pid;
	
	$total = mysql_query("SELECT COUNT(`post_id`) FROM `posts` WHERE `post_id` = {$pid}");
	$total = mysql_result($total, 0);
	
	if ($total != 1){
		return false;
	}else{
		return true;
	}
}

// fetches a summary of all the blog posts.
function get_posts(){
	$sql = "SELECT
				`posts`.`post_id` AS `id`,
				`posts`.`post_title` AS `title`,
				LEFT(`posts`.`post_body`, 512) AS `preview`,
				`posts`.`post_user` AS `user`,
				DATE_FORMAT(`posts`.`post_date`, '%d/%m/%Y %H:%i:%s') AS `date`,
				`comments`.`total_comments`,
				DATE_FORMAT(`comments`.`last_comment`, '%d/%m/%Y %H:%i:%s') AS `last_comment`
			FROM `posts`
			LEFT JOIN (
				SELECT
					`post_id`,
					COUNT(`comment_id`) AS `total_comments`,
					MAX(`comment_date`) AS `last_comment`
				FROM `comments`
				GROUP BY `post_id`
			) AS `comments`
			ON `posts`.`post_id` = `comments`.`post_id`
			ORDER BY `posts`.`post_date` DESC";
			
	$posts = mysql_query($sql);
	
	$rows = array();
	while (($row = mysql_fetch_assoc($posts)) !== false){
		$rows[] = array(
			'id'			    => $row['id'],
			'title'			=> $row['title'],
			'preview'		=> $row['preview'],
			'user'			=> $row['user'],
			'date'          => $row['date'],
			'total_comments'=> ($row['total_comments'] === null) ? 0 : $row['total_comments'],
			'last_comment'	=> ($row['last_comment'] === null) ? 'never' : $row['last_comment']
		);
	}
	
	return $rows;
}

// fetches a single post from the table.
function get_post($pid){
	$pid = (int)$pid;
	
	$sql = "SELECT
				`post_title` AS `title`,
				`post_body` AS `body`,
				`post_user` AS `user`,
				`post_date` AS `date`
			FROM `posts`
			WHERE `post_id` = {$pid}";
			
	$post = mysql_query($sql);
	$post = mysql_fetch_assoc($post);
	
	$post['comments'] = get_comments($pid);
	
	return $post;
}

// adds a new blog entry.
function add_post($name, $title, $body){
	$name	= mysql_real_escape_string(htmlentities($name));
	$title	= mysql_real_escape_string(htmlentities($title));
	$body	= mysql_real_escape_string(nl2br($body));
	
	mysql_query("INSERT INTO `posts` (`post_user`, `post_title`, `post_body`, `post_date`) VALUES ('{$name}', '{$title}', '{$body}', NOW())");
}
?>

Re: Blog help

Posted: Sun Jul 08, 2012 6:38 pm
by Temor
did you try echoing mysql_error(); ?

Re: Blog help

Posted: Sun Jul 08, 2012 7:07 pm
by FrederickGeek8
i checked and no errors

Re: Blog help

Posted: Sun Jul 08, 2012 7:31 pm
by Temor
is the date being inserted into the table correctly ?

Re: Blog help

Posted: Sun Jul 08, 2012 8:12 pm
by FrederickGeek8
Yes it is.

Re: Blog help

Posted: Sun Jul 08, 2012 11:09 pm
by Temor
Could you try changing NOW() to UNIX_TIMESTAMP() in your add_post query?
Tbh with you I have no idea how the NOW() function works in SQL. For me it just returns 2012 which isn't an actual time/date stamp and therefore formatting it wont make much sense.

Re: Blog help

Posted: Mon Jul 09, 2012 3:12 am
by FrederickGeek8
Well I'm not having trouble adding the post. I manually added the info to the database and it is not displaying on the page

Re: Blog help

Posted: Mon Jul 09, 2012 11:49 am
by Temor
Yes, that much I understand. But what does it look like? For me, it just says " 2012 ". You can't format "2012" to a date and time. A timestamp though, like this: "1336868281" could be formatted into a date and time. If you've perhaps set a too low max char length in your database, it could mess up the timestamp.

I'm just brainstorming here since I have no idea what is actually wrong.

What is the max length of your date field and are you using INT, DATETIME or TIMESTAMP?

Re: Blog help

Posted: Thu Jul 12, 2012 11:03 pm
by FrederickGeek8
It appears in the database as
2012-07-08 00:55:04

The type is datetime with no limit

Re: Blog help

Posted: Fri Jul 20, 2012 7:28 pm
by FrederickGeek8
I am still stuck on this problem. I really need this fixed by tomorrow :?
----------------------------------------------------------------------------------------------------
EDIT: Oh my god I am a boob. :shock: :o I forgot to echo $post['date']. WOW
So I had
<h4>By <?php echo $post['user']; ?> on <?php $post['date']; ?></h4>
When it should have been
<h4>By <?php echo $post['user']; ?> on <?php echo $post['date']; ?></h4>

Re: Blog help

Posted: Sat Jul 21, 2012 2:26 am
by Temor
Ah :P Glad you solved it :)