Skip to content

Instantly share code, notes, and snippets.

@iamshacky
Forked from patotoma/ContactForm.md
Created May 24, 2021 03:34
  • Star 0 You must be signed in to star a gist
  • Fork 0 You must be signed in to fork a gist
Star You must be signed in to star a gist
Save iamshacky/9fbccc2bd79f5345cc70cae48b7c9971 to your computer and use it in GitHub Desktop.
secure php contact form
<!DOCTYPE html>
<?php error_reporting(0); ?>
<html lang="en">
<head>
<title>Secure contact form</title>
<meta charset="utf-8">
<style>
p {
margin: 0;
color: red;
}
</style>
</head>
<body>
<?php
if(isset($_POST['submit'])){
$name = htmlspecialchars(stripslashes(trim($_POST['name'])));
$subject = htmlspecialchars(stripslashes(trim($_POST['subject'])));
$email = htmlspecialchars(stripslashes(trim($_POST['email'])));
$message = htmlspecialchars(stripslashes(trim($_POST['message'])));
if(!preg_match("/^[A-Za-z .'-]+$/", $name)){
$name_error = 'Invalid name';
}
if(!preg_match("/^[A-Za-z .'-]+$/", $subject)){
$subject_error = 'Invalid subject';
}
if(!preg_match("/^[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,4}$/", $email)){
$email_error = 'Invalid email';
}
if(strlen($message) === 0){
$message_error = 'Your message should not be empty';
}
}
?>
<form action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>" method="POST">
<label for="name">Name:</label><br>
<input type="text" name="name">
<p><?php if(isset($name_error)) echo $name_error; ?></p>
<label for="subject">Subject:</label><br>
<input type="text" name="subject">
<p><?php if(isset($subject_error)) echo $subject_error; ?></p>
<label for="email">Email:</label><br>
<input type="text" name="email">
<p><?php if(isset($email_error)) echo $email_error; ?></p>
<label for="message">Message:</label><br>
<textarea name="message"></textarea>
<p><?php if(isset($message_error)) echo $message_error; ?></p>
<input type="submit" name="submit" value="Submit">
<?php
if(isset($_POST['submit']) && !isset($name_error) && !isset($subject_error) && !isset($email_error) && !isset($message_error)){
$to = 'youremail@addres.com'; // edit here
$body = " Name: $name\n E-mail: $email\n Message:\n $message";
if(mail($to, $subject, $body)){
echo '<p style="color: green">Message sent</p>';
}else{
echo '<p>Error occurred, please try again later</p>';
}
}
?>
</form>
</body>
</html>

Secured PHP Contact Form

<?php
  if(isset($_POST['submit'])){
    $name = htmlspecialchars(stripslashes(trim($_POST['name'])));
    $subject = htmlspecialchars(stripslashes(trim($_POST['subject'])));
    $email = htmlspecialchars(stripslashes(trim($_POST['email'])));
    $message = htmlspecialchars(stripslashes(trim($_POST['message'])));
    if(!preg_match("/^[A-Za-z .'-]+$/", $name)){
      $name_error = 'Invalid name';
    }
    if(!preg_match("/^[A-Za-z .'-]+$/", $subject)){
      $subject_error = 'Invalid subject';
    }
    if(!preg_match("/^[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,4}$/", $email)){
      $email_error = 'Invalid email';
    }
    if(strlen($message) === 0){
      $message_error = 'Your message should not be empty';
    }
  }
?>

<form action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>" method="POST">
  <label for="name">Name:</label><br>
  <input type="text" name="name">
  <p><?php if(isset($name_error)) echo $name_error; ?></p>
  <label for="subject">Subject:</label><br>
  <input type="text" name="subject">
  <p><?php if(isset($subject_error)) echo $subject_error; ?></p>
  <label for="email">Email:</label><br>
  <input type="text" name="email">
  <p><?php if(isset($email_error)) echo $email_error; ?></p>
  <label for="message">Message:</label><br>
  <textarea name="message"></textarea>
  <p><?php if(isset($message_error)) echo $message_error; ?></p>
  <input type="submit" name="submit" value="Submit">
  <?php 
    if(isset($_POST['submit']) && !isset($name_error) && !isset($subject_error) && !isset($email_error) && !isset($message_error)){
      $to = 'youremail@addres.com'; // edit here
      $body = " Name: $name\n E-mail: $email\n Message:\n $message";
      if(mail($to, $subject, $body)){
        echo '<p style="color: green">Message sent</p>';
      }else{
        echo '<p>Error occurred, please try again later</p>';
      }
    }
  ?>
</form>

How to use:

  • Download contact.php file or just copy the code above to your *.php file.
  • Put the file to your website directory.
  • Change: $to = 'youremail@addres.com'; to your email address.

Feel free to modify code to suit your needs.

If you have any questions or innovations please leave me a comment.

patriktoma.studenthosting.sk

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment