<?php
# Copyright (C) 2006-2010 Tobias Leupold <tobias.leupold@web.de>
#
# This file is part of the b8 package
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation in version 2.1 of the License.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
# License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
### This is an example script demonstrating how b8 can be used. ###
#/*
# Use this code block if you want to use Berkeley DB.
# The database filename is interpreted relative to the b8.php script location.
$config_b8 = array(
'storage' => 'dba'
);
$config_database = array(
'database' => 'wordlist.db',
'handler' => 'db4'
);
#*/
/*
# Use this code block if you want to use MySQL.
# An existing link resource can be passed to b8 by setting
# $config_database['connection'] to this link resource.
# Be sure to set your database access data otherwise!
$config_b8 = array(
'storage' => 'mysql'
);
$config_database = array(
'database' => 'test',
'table_name' => 'b8_wordlist',
'host' => 'localhost',
'user' => '',
'pass' => ''
);
*/
# To be able to calculate the time the classification took
$time_start = NULL;
function microtimeFloat()
{
list($usec, $sec) = explode(" ", microtime());
return ((float) $usec + (float) $sec);
}
# Output a nicely colored rating
function formatRating($rating)
{
if($rating === FALSE)
return "<span style=\"color:red\">could not calculate spaminess</span>";
$red = floor(255 * $rating);
$green = floor(255 * (1 - $rating));
return "<span style=\"color:rgb($red, $green, 0);\"><b>" . sprintf("%5f", $rating) . "</b></span>";
}
echo <<<END
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<title>example b8 interface</title>
<meta http-equiv="content-type" content="text/html; charset=UTF-8" />
<meta name="dc.creator" content="Tobias Leupold" />
<meta name="dc.rights" content="Copyright (c) by Tobias Leupold" />
</head>
<body>
<div>
<h1>example b8 interface</h1>
END;
$postedText = "";
if(isset($_POST['action']) and $_POST['text'] == "")
echo "<p style=\"color:red;\"><b>Please type in a text!</b></p>\n\n";
elseif(isset($_POST['action']) and $_POST['text'] != "") {
$time_start = microtimeFloat();
# Include the b8 code
require dirname(__FILE__) . "/../b8/b8.php";
# Create a new b8 instance
$b8 = new b8($config_b8, $config_database);
# Check if everything worked smoothly
$started_up = $b8->validate();
if($started_up !== TRUE) {
echo "<b>example:</b> Could not initialize b8. error code: $started_up";
exit;
}
$text = stripslashes($_POST['text']);
$postedText = htmlentities($text, ENT_QUOTES, 'UTF-8');
switch($_POST['action']) {
case "Classify":
echo "<p><b>Spaminess: " . formatRating($b8->classify($text)) . "</b></p>\n";
break;
case "Save as Spam":
$ratingBefore = $b8->classify($text);
$b8->learn($text, b8::SPAM);
$ratingAfter = $b8->classify($text);
echo "<p>Saved the text as Spam</p>\n\n";
echo "<div><table>\n";
echo "<tr><td>Classification before learning:</td><td>" . formatRating($ratingBefore) . "</td></tr>\n";
echo "<tr><td>Classification after learning:</td><td>" . formatRating($ratingAfter) . "</td></tr>\n";
echo "</table></div>\n\n";
break;
case "Save as Ham":
$ratingBefore = $b8->classify($text);
$b8->learn($text, b8::HAM);
$ratingAfter = $b8->classify($text);
echo "<p>Saved the text as Ham</p>\n\n";
echo "<div><table>\n";
echo "<tr><td>Classification before learning:</td><td>" . formatRating($ratingBefore) . "</td></tr>\n";
echo "<tr><td>Classification after learning:</td><td>" . formatRating($ratingAfter) . "</td></tr>\n";
echo "</table></div>\n\n";
break;
case "Delete from Spam":
$b8->unlearn($text, b8::SPAM);
echo "<p style=\"color:green\">Deleted the text from Spam</p>\n\n";
break;
case "Delete from Ham":
$b8->unlearn($text, b8::HAM);
echo "<p style=\"color:green\">Deleted the text from Ham</p>\n\n";
break;
}
$mem_used = round(memory_get_usage() / 1048576, 5);
$peak_mem_used = round(memory_get_peak_usage() / 1048576, 5);
$time_taken = round(microtimeFloat() - $time_start, 5);
}
echo <<<END
<div>
<form action="{$_SERVER['PHP_SELF']}" method="post">
<div>
<textarea name="text" cols="50" rows="16">$postedText</textarea>
</div>
<table>
<tr>
<td><input type="submit" name="action" value="Classify" /></td>
</tr>
<tr>
<td><input type="submit" name="action" value="Save as Spam" /></td>
<td><input type="submit" name="action" value="Save as Ham" /></td>
</tr>
<tr>
<td><input type="submit" name="action" value="Delete from Spam" /></td>
<td><input type="submit" name="action" value="Delete from Ham" /></td>
</tr>
</table>
</form>
</div>
</div>
END;
if($time_start !== NULL) {
echo <<<END
<div>
<table border="0">
<tr><td>Memory used: </td><td>$mem_used MB</td></tr>
<tr><td>Peak memory used:</td><td>$peak_mem_used MB</td></tr>
<tr><td>Time taken: </td><td>$time_taken sec</td></tr>
</table>
</div>
END;
}
?>
</body>
</html>
