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mail()$_SERVER$_SERVER<?php
if ($_SERVER["REQUEST_METHOD"] == "POST") {
$name = htmlspecialchars($_POST['name']);
$phone = htmlspecialchars($_POST['phone']);
$email = htmlspecialchars($_POST['email']);
$recaptchaResponse = $_POST['g-recaptcha-response'];
// Verify reCAPTCHA
$secretKey = 'YOUR_RECAPTCHA_SECRET_KEY';
$response = file_get_contents("https://www.google.com/recaptcha/api/siteverify?secret=$secretKey&response=$recaptchaResponse");
$responseKeys = json_decode($response, true);
if (intval($responseKeys["success"]) !== 1) {
die('Please complete the reCAPTCHA.');
}
// Validate email
if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
die('Invalid email format.');
}
// Prepare and send email
$to = 'info@mydomain.com';
$subject = 'New Contact Form Submission';
$message = "Name: $name\nPhone: $phone\nEmail: $email";
$headers = 'From: noreply@mydomain.com' . "\r\n" .
'Reply-To: noreply@mydomain.com' . "\r\n" .
'X-Mailer: PHP/' . phpversion();
if (mail($to, $subject, $message, $headers)) {
echo 'Message sent successfully!';
} else {
echo 'Failed to send message.';
}
}
?><?php
session_start();
$time_limit = 60; // Time limit in seconds
if (isset($_SESSION['last_submission'])) {
$last_submission = $_SESSION['last_submission'];
if (time() - $last_submission < $time_limit) {
die('Please wait before submitting the form again.');
}
}
$_SESSION['last_submission'] = time();
// Proceed with sending the email
mail($to, $subject, $message, $headers);
?><?php
$ip_address = $_SERVER['REMOTE_ADDR'];
$time_limit = 60; // Time limit in seconds
$max_attempts = 5; // Maximum number of attempts allowed
// Connect to the database
$conn = new mysqli('hostname', 'username', 'password', 'database');
// Check if the IP address exists in the database
$query = "SELECT * FROM submissions WHERE ip_address = '$ip_address'";
$result = $conn->query($query);
if ($result->num_rows > 0) {
$row = $result->fetch_assoc();
$last_attempt = strtotime($row['last_attempt']);
$attempts = $row['attempts'];
if (time() - $last_attempt < $time_limit) {
if ($attempts >= $max_attempts) {
die('You have exceeded the maximum number of submissions. Please try again later.');
} else {
$attempts++;
$query = "UPDATE submissions SET attempts = $attempts, last_attempt = NOW() WHERE ip_address = '$ip_address'";
$conn->query($query);
}
} else {
$query = "UPDATE submissions SET attempts = 1, last_attempt = NOW() WHERE ip_address = '$ip_address'";
$conn->query($query);
}
} else {
$query = "INSERT INTO submissions (ip_address, attempts, last_attempt) VALUES ('$ip_address', 1, NOW())";
$conn->query($query);
}
// Proceed with sending the email
mail($to, $subject, $message, $headers);
?><?php
$ip_address = $_SERVER['REMOTE_ADDR'];
$time_limit = 60; // Time limit in seconds
$max_attempts = 5; // Maximum number of attempts allowed
// Connect to the database
$conn = new mysqli('hostname', 'username', 'password', 'database');
// Check if the IP address exists in the database
$query = "SELECT * FROM submissions WHERE ip_address = ?";
$stmt = $conn->prepare($query);
$stmt->bind_param('s', $ip_address);
$stmt->execute();
$result = $stmt->get_result();
if ($result->num_rows > 0) {
$row = $result->fetch_assoc();
$last_attempt = strtotime($row['last_attempt']);
$attempts = $row['attempts'];
if (time() - $last_attempt < $time_limit) {
if ($attempts >= $max_attempts) {
die('You have exceeded the maximum number of submissions. Please try again later.');
} else {
$attempts++;
$query = "UPDATE submissions SET attempts = ?, last_attempt = NOW() WHERE ip_address = ?";
$stmt = $conn->prepare($query);
$stmt->bind_param('is', $attempts, $ip_address);
$stmt->execute();
}
} else {
$query = "UPDATE submissions SET attempts = 1, last_attempt = NOW() WHERE ip_address = ?";
$stmt = $conn->prepare($query);
$stmt->bind_param('s', $ip_address);
$stmt->execute();
}
} else {
$query = "INSERT INTO submissions (ip_address, attempts, last_attempt) VALUES (?, 1, NOW())";
$stmt = $conn->prepare($query);
$stmt->bind_param('s', $ip_address);
$stmt->execute();
}
// Proceed with sending the email
mail($to, $subject, $message, $headers);
?>