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level6.php
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level6.php
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<!DOCTYPE html><!--STATUS OK--><html>
<head>
<meta http-equiv="content-type" content="text/html;charset=utf-8">
<script>
window.alert = function()
{
confirm("完成的不错！");
window.location.href="level7.php?keyword=move up!";
}
</script>
<title>欢迎来到level6</title>
</head>
<body>
<h1 align=center>欢迎来到level6</h1>
<?php
ini_set("display_errors", 0);
$str = $_GET["keyword"];
$str2=str_replace("<script","<scr_ipt",$str);
$str3=str_replace("on","o_n",$str2);
$str4=str_replace("src","sr_c",$str3);
$str5=str_replace("data","da_ta",$str4);
$str6=str_replace("href","hr_ef",$str5);
echo "<h2 align=center>没有找到和".htmlspecialchars($str)."相关的结果.</h2>".'<center>
<form action=level6.php method=GET>
<input name=keyword value="'.$str6.'">
<input type=submit name=submit value=搜索 />
</form>
</center>';
?>
<center><img src=level6.png></center>
<?php
echo "<h3 align=center>payload的长度:".strlen($str6)."</h3>";
?>
</body>
</html>