How can PHP developers ensure proper HTML syntax and structure in their dynamic web pages?

PHP developers can ensure proper HTML syntax and structure in their dynamic web pages by using PHP's built-in functions like `htmlspecialchars()` to escape special characters in user input, and by properly concatenating HTML strings within PHP code. Additionally, developers should separate their PHP logic from their HTML markup by using a templating system or MVC framework to maintain clean and organized code. 

<?php
// Example of using htmlspecialchars() to escape special characters in user input
$userInput = "<script>alert('XSS attack!');</script>";
echo "<p>" . htmlspecialchars($userInput) . "</p>";
?>

Keywords

HTML validation DOM manipulation PHP output buffering htmlspecialchars HTML entities

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