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example_form.php
<?php
session_start();
?>
<html>
<head>
<title>Securimage Test Form</title>
</head>
<body>
<?php
if (empty($_POST)) { ?>
<form method="POST">
Username:<br />
<input type="text" name="username" /><br />
Password:<br />
<input type="text" name="password" /><br />
<!-- pass a session id to the query string of the script to prevent ie caching -->
<img src="securimage_show.php?sid=<?php echo md5(uniqid(time())); ?>"><br />
<input type="text" name="code" /><br />
<input type="submit" value="Submit Form" />
</form>
<?php
} else { //form is posted
include("securimage.php");
$img = new Securimage();
$valid = $img->check($_POST['code']);
if($valid == true) {
echo &quo
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$smarty->assign('name',strtotime('-0'));
$smarty->display("index.html");
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PHP code
<?php
if(!file_exists("ceshi.txt")){
fopen("ceshi. ......