How to make multiple errors in PHP when theres no information typed in

1

I’m trying to make my assignment to look like this when there’s no information typed in but I’m not sure how to do it:

assignmenthelp3
assignmenthelp3708×312 71.5 KB

My PHP so far:

 <!DOCTYPE HTML>

<html>
<head>
	<title>Thank You for Registering!</title>
	<link rel="stylesheet" type="text/css" href="css/KingLib2_.css"/>
</head>

<body>
<br/>

 <div id="logo">
	  <img src="KingLibLogo.jpg" alt="King Real Estate Logo"> 
	  <div id="h3">
	  <h3>Thank You for Registering!</h3>
	  
     </div> </h3>

<?php
	$firstname = $_POST['firstname']; 
	$lastname = $_POST['lastname']; 
	$email = $_POST['email']; 
	$cityofresidence = $_POST['cityofresidence']; 
	$birthyear = $_POST['birthyear'];
	$current_year = date('Y');
	$age = $current_year - $birthyear;

	print "<p>Name: $firstname $lastname"; 
	print "<p>Email: $email"; 
	print "<p>City: $cityofresidence"; 
	print "<p>Birth Year: $birthyear";
	
	if ($age > 55) {
	
		print"<p>Section: Senior</p>";
	}
	if ($age < 54) {
	
        print"<p>Section: Adult</p>";
	
	} if ($age < 14 ) {
		 
		 
	    print"<p>Section: Child</p>";
		
	 }
	


?>

</body>
</html>
2

I’ve edited your post for readability. When you enter a code block into a forum post, please precede it with a separate line of three backticks and follow it with a separate line of three backticks to make it easier to read.

See this post to find the backtick on your keyboard. The “preformatted text” tool in the editor (</>) will also add backticks around text.

Note: Backticks are not single quotes.

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