<?php
session_start();
if( isset($_POST['submit'])) {
if( $_SESSION['security_code'] == $_POST['security_code'] && !empty($_SESSION['security_code'] ) ) {
// If the answer is true. Insert you code for processing the form here, e.g emailing the submission, entering it into a database.
echo 'Thank you. Your message said "'.$_POST['message'].'"';
unset($_SESSION['security_code']);
} else {
// If the answer is false. Insert your code for showing an error message here.
echo 'Ups, you have provided an invalid security code! Please ';
?>
<a href="form_example.php">reload</a>
<?PHP
}
} else {
?>
<form action="form_example.php" method="post">
<label for="name">Name: </label><input type="text" name="name" id="name" /><br />
<label for="email">Email: </label><input type="text" name="email" id="email" /><br />
<label for="message">Message: </label><textarea rows="5" cols="30" name="message" id="message"></textarea><br />
<img src="MathchaSecurityImages.php?difficulty=1&theme=t0" /><br />
<label for="security_code">Security Code: </label><input id="security_code" name="security_code" type="text" /><br />
<input type="submit" name="submit" value="Submit" />
</form>
<?php
}
?>
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