How can PHP variables be efficiently integrated into HTML content using methods other than echo?

To efficiently integrate PHP variables into HTML content without using echo, you can use the alternative syntax of PHP, which allows you to embed PHP code directly within HTML. This can make the code more readable and maintainable, especially for larger blocks of HTML content with embedded variables.

<?php
$name = 'John Doe';
$age = 30;
?>
<!DOCTYPE html>
<html>
<head>
    <title>Profile</title>
</head>
<body>
    <h1>User Profile</h1>
    <p>Name: <?= $name ?></p>
    <p>Age: <?= $age ?></p>
</body>
</html>