What are common mistakes made by PHP beginners when integrating PHP pages into HTML?

Common mistakes made by PHP beginners when integrating PHP pages into HTML include not properly closing PHP tags, not echoing PHP variables within HTML, and not using the correct file extension (.php) for PHP files. To solve these issues, make sure to properly close PHP tags with "?>" when switching back to HTML, use echo or print to output PHP variables within HTML, and save PHP files with a .php extension. 

<?php
// Example of echoing a PHP variable within HTML
$name = "John";
?>
<!DOCTYPE html>
<html>
<head>
    <title>Welcome</title>
</head>
<body>
    <h1>Welcome, <?php echo $name; ?></h1>
</body>
</html>

Keywords

Syntax errors include statement variable scope form handling security vulnerabilities

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