Specifications

do_html_header(“$title”);

display_new_post_form($parent, $area, $title, $message, $name);

if($error)

echo “Your message was not stored. Make sure you have filled in all

fields and try again.”;

do_html_footer();

After some initial setting up, this script checks whether the parent is zero or otherwise. If it is

zero, this is a new topic, and little further work is needed.

If this is a reply ($parent is the postid of an existing article), then the script goes ahead and

sets up the title and the text of the original message, as follows:

// get post name

$title = get_post_title($parent);

// append Re:

if(strstr($title, “Re: “) == false )

$title = “Re: “.$title;

//make sure title will still fit in db

$title = substr($title, 0, 20);

//prepend a quoting pattern to the post you are replying to

$message = add_quoting(get_post_message($parent));

The functions it uses here are get_post_title(), get_post_message(), and add_quoting().

These functions are all from the discussion_fns.php library. They are shown in Listings 29.9,

29.10, and 29.11, respectively.

LISTING 29.9 get_post_title() Function from discussion_fns.php—Retrieves a Message’s

Title from the Database

function get_post_title($postid)

{

// extract one post’s name from the database

if(!$postid) return “”;

$conn = db_connect();

Building Practical PHP and MySQL Projects

ART V

736

LISTING 29.8 Continued

35 7842 CH29 3/6/01 3:34 PM Page 736