How can the use of HTML tags in PHP scripts lead to unexpected errors and how can they be fixed?

When using HTML tags in PHP scripts, it can lead to unexpected errors because PHP code and HTML markup should be separated for clarity and maintainability. To fix this, you can use PHP's echo or print functions to output HTML content within the PHP script. 

<?php
// Incorrect way of mixing HTML and PHP
echo "<h1>Hello World!</h1>";

// Correct way of separating PHP and HTML
echo "<h1>";
echo "Hello World!";
echo "</h1>";
?>

Keywords

HTML tags PHP scripts unexpected errors fixing validation

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