What are common mistakes when converting HTML emails to text emails in PHP?

Common mistakes when converting HTML emails to text emails in PHP include not properly handling HTML tags, losing formatting or links, and not preserving the structure of the email. To avoid these issues, use PHP's strip_tags() function to remove HTML tags and convert the HTML content to plain text.

// Convert HTML email to plain text
$html_content = "<p>This is an <a href='https://example.com'>example</a> email with <strong>HTML</strong> content.</p>";
$text_content = strip_tags($html_content);

// Display the plain text content
echo $text_content;