<?php
include '../lib/rules/RuleInterface.php';
include '../lib/rules/BaseRule.php';
include '../lib/rules/SessionTimeTrapRule.php';
include '../lib/NoCaptchaAntiSpam.php';
use daxslab\nocaptcha\NoCaptchaAntiSpam;
use daxslab\nocaptcha\rules\SessionTimeTrapRule;
$title = "Session based time trap";
// Session based time trap needs an active session
session_start();
// Declare no captcha anti spam object with session based time trap
$noCaptchaAntiSpam = NoCaptchaAntiSpam::create([
'rules' => [
SessionTimeTrapRule::create([
// number of seconds allowed before submission
'time' => 3,
])
],
]);
?>
<?php
include_once('common/header.php');
?>
<div class="row">
<div class="col-md-12">
<h1><?= $title ?></h1>
<p>
A time trap will be triggered when a form is submitted too fast. The session based time trap will use a PHP
session variable to store a timestamp. This rule doesn't include any extra data in forms, so will be
complete hidden to bots. Unlike <a href="form_time_trap.php">Form based time trap</a>, PHP sessions
needs to be enabled and form can be submitted from multiple tabs.
</p>
<h2>Example:</h2>
<!-- show an alert message if it's a bot submit -->
<?php if ($_POST): ?>
<?php if ($noCaptchaAntiSpam->checkSubmit()): ?>
<div class="alert alert-success" role="alert">
Form submitted correctly
</div>
<?php else: ?>
<div class="alert alert-danger" role="alert">
Bot detected
</div>
<?php endif; ?>
<?php endif; ?>
<form id="contactForm" method="post">
<div class="form-group">
<label for="contactName">Name</label>
<input class="form-control" name="contact_name" id="contactName" placeholder="Enter name">
</div>
<div class="form-group">
<label for="contactEmail1">Email address</label>
<input type="email" name="contact_email" class="form-control" id="contactEmail1" placeholder="Enter email">
</div>
<div class="form-group">
<label for="contactBody">Body</label>
<textarea name="contact_body" class="form-control" id="contactBody" placeholder="Write to us"></textarea>
</div>
<button type="submit" name="submit_button" class="btn btn-primary">Submit</button>
<!-- Include rules form elements -->
<?= $noCaptchaAntiSpam->renderRules() ?>
</form>
<br>
<h2>PHP example code:</h2>
<?php
$code = <<< EOT
<?php
use daxslab\\nocaptcha\\NoCaptchaAntiSpam;
use daxslab\\nocaptcha\\rules\\SessionTimeTrapRule;
// Session based time trap needs an active session
session_start();
// Declare no captcha anti spam object with session based time trap
\$noCaptchaAntiSpam = NoCaptchaAntiSpam::create([
'rules' => [
SessionTimeTrapRule::create([
// number of seconds allowed before submission
'time' => 3,
])
],
]);
?>
<!-- show an alert message if is a bot submit -->
<?php if (\$_POST): ?>
<?php if (\$noCaptchaAntiSpam->checkSubmit()): ?>
<div class="alert alert-success" role="alert">
Form submitted correctly
</div>
<?php else: ?>
<div class="alert alert-danger" role="alert">
Bot detected
</div>
<?php endif; ?>
<?php endif; ?>
<form id="contactForm" method="post">
<div class="form-group">
<label for="contactName">Name</label>
<input class="form-control" name="contact_name" id="contactName" placeholder="Enter name">
</div>
<div class="form-group">
<label for="contactEmail1">Email address</label>
<input type="email" name="contact_body" class="form-control" id="contactEmail1" placeholder="Enter email">
</div>
<div class="form-group">
<label for="contactBody">Body</label>
<textarea name="contact_email" class="form-control" id="contactBody" placeholder="Write to us"></textarea>
</div>
<button type="submit" name="submit_button" class="btn btn-primary">Submit</button>
<!-- Include rules form elements -->
<?= \$noCaptchaAntiSpam->renderRules() ?>
</form>
EOT;
?>
<pre>
<code class="HTML">
<?= htmlspecialchars($code) ?>
</code>
</pre>
</div>
</div>
<?php
include_once('common/footer.php');
?>
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