What are some best practices for combining PHP and HTML code to ensure proper functionality on a website?

When combining PHP and HTML code on a website, it is important to ensure that the PHP code is properly embedded within the HTML code using opening and closing PHP tags. Additionally, it is crucial to sanitize user input to prevent security vulnerabilities such as SQL injection attacks. Using functions like htmlspecialchars() can help escape special characters and prevent malicious code execution. 

<?php
// Example of combining PHP and HTML code
$userInput = "<script>alert('Hello, World!');</script>";
?>

<!DOCTYPE html>
<html>
<head>
    <title>PHP HTML Example</title>
</head>
<body>
    <h1>Welcome, <?php echo htmlspecialchars($userInput); ?>!</h1>
</body>
</html>

Keywords

PHP HTML integration syntax validation

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