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<title>PHP Input Filter</title>
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.small {
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.title {
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<script language="JavaScript" type="text/JavaScript">
<!--
function MM_jumpMenu(targ,selObj,restore){ //v3.0
eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
if (restore) selObj.selectedIndex=0;
}
//-->
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<style type="text/css">
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a:link {
color: #666666;
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a:visited {
color: #666666;
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<div style="font-weight: bold; font-size: 12px; ">PHP Input Filter - 1.2.0</div>
Copyright 2005 Daniel Morris. (<a href="http://www.opensource.org/licenses/gpl-license.php" alt="GNU General Public Licence">GPL Licence.</a>)
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<td width="30" class="grey">
<form name="relatedlinks">
<select name="rlinks" onChange="MM_jumpMenu('parent',this,1)" >
<option value="" selected>Related Links...</option>
<option disabled>- - - - - - - - -</option>
<option value="http://cyberai.com/inputfilter/">Project homepage</option>
<option value="http://cyberai.users.phpclasses.org/browse/package/2189.html">Phpclasses.org project</option>
<option value="http://cyberai.com/inputfilter/input_filter.zip">Download files as .zip</option>
<option value="readme.txt">Documentation</option>
<option value="http://cyberai.com/inputfilter/blacklist.php">Filter Blacklist</option>
<option value="mailto:dan__at__rootcube.com">Email author</option>
<option disabled>- - - - - - - - -</option>
<option value="http://www.globodigital.net/Documentation/Security_Articles/The_Cross_Site_Scripting_FAQ/">Introduction to XSS</option>
<option value="http://www.shocking.com/~rsnake/xss.html">XSS Cheat Sheet</option>
</select>
</form>
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<form name="examples">
<select name="exmpl" onChange="MM_jumpMenu('parent',this,1)" >
<option value="" selected>Online Examples...</option>
<option disabled>- - - - - - - - -</option>
<option value="http://cyberai.com/inputfilter/examples/string.php">String</option>
<option value="http://cyberai.com/inputfilter/examples/array.php">Array-of-Strings</option>
<option value="http://cyberai.com/inputfilter/examples/noparam.php">No Parameters</option>
<option value="http://cyberai.com/inputfilter/examples/xss0.php">XSS #0</option>
<option value="http://cyberai.com/inputfilter/examples/xss1.php">XSS #1</option>
<option value="http://cyberai.com/inputfilter/examples/xss2.php">XSS #2</option>
<option value="http://cyberai.com/inputfilter/examples/xss3.php">XSS #3</option>
<option value="http://cyberai.com/inputfilter/examples/xss4.php">XSS #4</option>
<option value="http://cyberai.com/inputfilter/examples/xss5.php">XSS #5</option>
<option value="http://cyberai.com/inputfilter/examples/xss6.php">XSS #6</option>
<option value="http://cyberai.com/inputfilter/examples/xss7.php">XSS #7</option>
<option value="http://cyberai.com/inputfilter/examples/xss8.php">XSS #8</option>
<option value="http://cyberai.com/inputfilter/examples/sql-inject.php">SQL-Injection</option>
</select>
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<?php
// inject sample $_POST data etc..
if ($_GET["use"] == "sample") {
$sample_link = '<span class="small" style="color: #bbb; text-decoration: line-through;">(Inject sample form data)</span>';
$_POST["input"] = 'I like <div good="blah" bad=blah>php</div> but not <br> XSS <img src=javascript:alert(\'bad!\')>';
$_POST["tags"] = 'br';
$_POST["attr"] = 'good, style';
$_POST["tagmethod"] = 1;
$_POST["attrmethod"] = 0;
$_POST["xssauto"] = 'y';
// sample_link as normal
} else $sample_link = '<span class="small">(<a href="index.php?use=sample">Inject sample form data</a>)</span>';
?>
<form class="white" action="index.php" method="post">
<div class="title">Example Factory: <?php echo $sample_link; ?></div>
<div style="margin-bottom: 5px;">String to be filtered:</div>
<textarea name="input" style="width: 500px; height: 80px;"><?php if ($_POST["input"]) echo stripslashes($_POST["input"]); ?></textarea>
<div style="margin-bottom: 5px; margin-top: 14px;">List Tags: <span class="small">(Comma-delimited. Eg: tag1, tag2, tag3)</span></div>
<input name="tags" type="text" style="width: 500px;" value="<?php if ($_POST["tags"]) echo $_POST["tags"]; ?>">
<div style="margin-bottom: 5px; margin-top: 14px;">List Attributes: <span class="small">(Comma-delimited. Eg: attr1, attr2, attr3)</span></div>
<input name="attr" type="text" style="width: 500px;" value="<?php if ($_POST["attr"]) echo $_POST["attr"]; ?>">
<div style="margin-bottom: 5px; margin-top: 14px;">Tag method to apply:</div>
<select name="tagmethod">
<option value="0" <?php if ((!$_POST["tagmethod"]) || ($_POST["tagmethod"] == 0)) echo "selected"; ?>>Remove all tags but specified</option>
<option value="1" <?php if ($_POST["tagmethod"] == 1) echo "selected"; ?>>Remove only specified tags</option>
</select>
<div style="margin-bottom: 5px; margin-top: 14px;">Attibute method to apply:</div>
<select name="attrmethod">
<option value="0" <?php if ((!$_POST["attrmethod"]) || ($_POST["attrmethod"] == 0)) echo "selected"; ?>>Remove all attibutes but specified</option>
<option value="1" <?php if ($_POST["attrmethod"] == 1) echo "selected"; ?>>Remove only specified attibutes</option>
</select>
<div style="margin-bottom: 5px; margin-top: 14px;">Strip <a href="http://cyberai.com/inputfilter/blacklist.php">identified</a> problem tags and attributes, regardless of user-defined arrays:</div>
<select name="xssauto">
<option value="y" <?php if ((!$_POST["xssauto"]) || ($_POST["xssauto"] == 'y')) echo "selected"; ?>>Auto-strip blacklisted: YES</option>
<option value="n" <?php if ($_POST["xssauto"] == 'n') echo "selected"; ?>>Auto-strip blacklisted: NO</option>
</select>
<br><br><br>
<input type="hidden" name="sent" value="yes">
<input name="submit" type="submit" value="Process Query">
</form>
<?php
// include class file
require_once("class.inputfilter_clean.php");
// form has been sent empty
if (($_POST["sent"]) && (!$_POST["input"])) {
echo "<div class=\"white\"><div class=\"title\">View Results:</div>You have not entered any input data!!</div>\n";
// form has been sent and input is not empty
} else if (($_POST["sent"]) && ($_POST["input"])) {
// input text
$_POST["input"] = stripslashes($_POST["input"]);
// tags array
$tags = explode(',', $_POST["tags"]);
for ($i = 0; $i < count($tags); $i++) $tags[$i] = trim($tags[$i]);
// attr array
$attr = explode(',', $_POST["attr"]);
for ($i = 0; $i < count($attr); $i++) $attr[$i] = trim($attr[$i]);
// select fields
$tag_method = $_POST["tagmethod"];
$attr_method = $_POST["attrmethod"];
if ($_POST["xssauto"] == 'n') $xss_auto = 0;
else $xss_auto = 1;
// script-timer setup
$sStart = microtime();
// more info on parameters in documentation.
$myFilter = new InputFilter($tags, $attr, $tag_method, $attr_method, $xss_auto);
// process input
$result = $myFilter->process($_POST["input"]);
// script timer stop
$sStop = microtime();
// script-timer display
$time_elapsed = round(($sStop - $sStart), 4);
// display output
echo "<div class=\"white\"><div class=\"title\">View Results:</div>\n";
echo '<div style="font-size: 11px; font-weight: normal; font-style: italic;"><span style="padding-right: 11px;">(Before)</span> ' . htmlentities($_POST["input"]) . "</div>\n";
echo '<div style="font-size: 15px; font-weight: normal; padding-top: 10px;"><span style="padding-right: 12px;">(After)</span> ' . htmlentities($result) . "</div>\n";
// echo '<div style="font-size: 15px; font-weight: normal; padding-top: 10px;"><span style="padding-right: 12px;">(Actual)</span> ' . $result . "</div>\n";
echo "</div>\n";
echo "<div class=\"grey\" style=\"margin-top: 12px;\"><em>Script execution has taken $time_elapsed seconds.</em></div>\n";
}
?>
</body>
</html>
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