PHP Tutorial: Blog (Including Commenting) blank page
Posted: Sun Oct 21, 2012 3:52 pm
I get a blank page when trying to run the blog_list.php.....I have error reporting turned on, but I get no errors.
<?php
include('core/init.inc.php');
?>
<body>
<div>
<?
$posts = get_posts();
$print_r($posts);
?>
</div>
</body>
</html>
<?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));
$body = mysql_real_escape_string(nl2br(htmlentities($body)));
mysql_query("INSERT INTO `posts`(`post_user`,`post_title`,`post_body`,`post_date`) VALUES('{$name}','{$title}','{$body}',NOW())");
}
}
?>
any help will be appreciated