Maxxus PRO SPK-23 Especificaciones descargar pdf (Pagina 711)

100

101

LISTING 28.8 Continued

$info = load_list_info($listid);

if($info)

{

echo “<h2>”.pretty($info[listname]).”</h2>”;

echo ‘<p>’.pretty($info[blurb]);

echo ‘<p>Number of subscribers:’ . $info[subscribers];

echo ‘<p>Number of messages in archive:’ . $info[archive];

}

The display_information() function uses two other functions to help it achieve its Web task:

the load_list_info() function and the pretty() function. The load_list_info() function

actually retrieves the data from the database. The pretty() function simply formats the data

from the database by stripping out slashes, turning newlines into HTML line breaks, and so on.

Let’s look briefly at the load_list_info() function. This function is in the mlm_fns.php

function library. The code for it is shown in Listing 28.9.

LISTING 28.9 load_list_info() Function from mlm_fns.php—This Function Builds an Array

of List Information

function load_list_info($listid)

{

if(!$listid)

return false;

if(!db_connect())

return false;

$query = “select listname, blurb from lists where listid = $listid”;

$result = mysql_query($query);

if(!$result)

{

echo “Cannot retrieve this list”;

return false;

}

$info = mysql_fetch_array($result);

$query = “select count(*) from sub_lists where listid = $listid”;

$result = mysql_query($query);

if($result)

{

$info[‘subscribers’] = mysql_result($result, 0, 0);

}

Building a Mailing List Manager

HAPTER 28

BUILDING A

MAILING LIST

MANAGER

685

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