PHP Simple Contact Form

This is a PHP script for a simple contact form.
<?php

/**
* Simple Contact Form
*
* This script shows an example contact form
* that validates the form values, alerts
* user to make any necessary changes,
* then sends the data to a specified recipient.
* 
* You should include a captcha or honeypot to
* prevent spammers or bots from abusing the form.
* 
* @author		PHP Simple
* @website		https://phpsimple.com
* @date			August 2021
*/

if ($_SERVER["REQUEST_METHOD"] == "POST") {
	
	// Check and clean the data submitted...
	
	// Validate name field
	if (empty($_POST["name"])) {
		$err_name = "* Name is required."; // Display error if no value submitted
	} else {
		$name = make_safe($_POST["name"]); // Clean data and make sure it's valid
		if (!preg_match("/^[a-zA-Z ]*$/",$name)) {
			$err_name = "* Only letters and white space allowed"; 
		}
	}
	
	// Validate email field 
	if (empty($_POST["email"])) {
		$err_email = "* Email is required."; // Display error if no value submitted
	} else {
		$email = make_safe($_POST["email"]);
		if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
		  $err_email = "Email entered is invalid"; 
		}
	}
	
	// Validate message
	if (empty($_POST["message"])) {
		$err_msg = "* Message required."; // Display error if no value submitted
	} else {
		$msg = make_safe($_POST["message"]);
	}
	
	// If no errors found, send email
	if (empty($err_name) && empty($err_email) && empty($err_msg)) {
		// To
		$to = "youremailaddress@example.com";

		// Subject
		$sub = "Contact Form Submission";

		// Message
		$msg = "
		<html>
		  <head>
			<title>Contact Form</title>
		  </head>
		  <body>
			<p>You have received a message through your contact form.</p>
			<table>
				<tr>
					<td>Name: </td>
					<td>$name</td>
				</tr>
				<tr>
					<td>Email: </td>
					<td>$email</td>
				</tr>
				<tr>
					<td>Message: </td>
					<td>$msg</td>
				</tr>
			</table>
		  </body>
		</html>
		";

		// Headers *** You MUST set the content type to send an HTML email
		$headers = "MIME-Version: 1.0" . "\r\n";
		$headers .= "Content-type:text/html;charset=UTF-8" . "\r\n";
		$headers .= 'From: <youremail@example.com>' . "\r\n";

		// Send the email
		mail($to,$sub,$msg,$headers);
		
		$success = "<h3>Your message has been sent!</h3>";
	} 
	
}

// Make input safe - prevents hacking 
function make_safe($value) {
	$value = trim($value);
	$value = stripslashes($value);
	$value = htmlspecialchars($value);
	return $value;
}

?>

<html>
	<head>
		<title>Example Contact Form</title>
	</head>
	<body>
		<h1>Contact Us</h1>
		<?php 
			if (!empty($success)) {
				echo $success;
			} else {
		?>
		<form method="post" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>">
			<p><span class="error"><?php if (!empty($err_name)) echo $err_name; ?></span></p>
			<p>Name: <input type="text" name="name" value="<?php if (!empty($name)) echo $name; ?>"></p>
			
			<p><span class="error"><?php if (!empty($err_email)) echo $err_email; ?></span></p>
			<p>Email: <input type="text" name="email" value="<?php if (!empty($email)) echo $email; ?>"></p>
			
			<p><span class="error"><?php if (!empty($err_msg)) echo $err_msg; ?></span></p>
			<p>Message: <textarea name="message" rows="5" cols="40"><?php if (!empty($msg)) echo $msg; ?>"</textarea></p>
			
			<p><input type="submit" name="submit" value="Send"></p>  
		</form>
		<?php } ?>
	</body>	
</html>
Posted in Forms, PHP Scripts and tagged contact form