blog_list issue
Posted: Thu Dec 08, 2011 10:52 pm
Hello!
When I watched the tutorial on how to create a blog, on the part 4 video, I am having an issue with the content showing up on the "blog_list.php". For some reason nothing shows on that page where the "get_posts" function should output what is in the database as well as the html formating. I have a feeling I did something wrong in the "get_posts" function but then again, It could just be that I did something wrong in the "blog_list" Any help would be greatly appreciated
here are the two files in code:
blog_list.php
When I watched the tutorial on how to create a blog, on the part 4 video, I am having an issue with the content showing up on the "blog_list.php". For some reason nothing shows on that page where the "get_posts" function should output what is in the database as well as the html formating. I have a feeling I did something wrong in the "get_posts" function but then again, It could just be that I did something wrong in the "blog_list" Any help would be greatly appreciated
here are the two files in code:
blog_list.php
<?php
include('core/init.inc.php');
?>
<!DOCTYPE html PUBLIC "-//WC3//DTD XHTML 1.0 Strict//EN" "http://www.w3/org/TR/xhtml1/DTD/xhtml-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Blog</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>
<h4>(<?php echo $post['total_comments']; ?> comments, last comment <?php echo $post['last_comment']; ?>)</h4>
<hr />
<p><?php echo $post['preview'] ?></p>
<?php
}
?>
</div>
</body>
</html>
and here is "posts.inc.php"
<?php
//checks if the given post id is in the table
function valid_pid($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;
}
}
//gets a summary of all 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) {
$row[] = 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 $rows;
}
//gets a single post from the table
function get_post($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) {
$name = mysql_real_escape_string(htmlentites($name));
$title = mysql_real_escape_string(htmlentites($title));
$body = mysql_real_escape_string(nl2br(htmlentites($body)));
mysql_query("INSERT INTO `posts` (`post_user`, `post_title`, `post_body`, `post_date`) VALUES ('{$name}', '{$title}', '{$body}', NOW())");
}
?>